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Filename : tinycolor.js
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// This file is autogenerated. It's used to publish CJS to npm.
(function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
  typeof define === 'function' && define.amd ? define(factory) :
  (global = typeof globalThis !== 'undefined' ? globalThis : global || self, global.tinycolor = factory());
})(this, (function () { 'use strict';

  function _typeof(obj) {
    "@babel/helpers - typeof";

    return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (obj) {
      return typeof obj;
    } : function (obj) {
      return obj && "function" == typeof Symbol && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj;
    }, _typeof(obj);
  }

  // https://github.com/bgrins/TinyColor
  // Brian Grinstead, MIT License

  var trimLeft = /^\s+/;
  var trimRight = /\s+$/;
  function tinycolor(color, opts) {
    color = color ? color : "";
    opts = opts || {};

    // If input is already a tinycolor, return itself
    if (color instanceof tinycolor) {
      return color;
    }
    // If we are called as a function, call using new instead
    if (!(this instanceof tinycolor)) {
      return new tinycolor(color, opts);
    }
    var rgb = inputToRGB(color);
    this._originalInput = color, this._r = rgb.r, this._g = rgb.g, this._b = rgb.b, this._a = rgb.a, this._roundA = Math.round(100 * this._a) / 100, this._format = opts.format || rgb.format;
    this._gradientType = opts.gradientType;

    // Don't let the range of [0,255] come back in [0,1].
    // Potentially lose a little bit of precision here, but will fix issues where
    // .5 gets interpreted as half of the total, instead of half of 1
    // If it was supposed to be 128, this was already taken care of by `inputToRgb`
    if (this._r < 1) this._r = Math.round(this._r);
    if (this._g < 1) this._g = Math.round(this._g);
    if (this._b < 1) this._b = Math.round(this._b);
    this._ok = rgb.ok;
  }
  tinycolor.prototype = {
    isDark: function isDark() {
      return this.getBrightness() < 128;
    },
    isLight: function isLight() {
      return !this.isDark();
    },
    isValid: function isValid() {
      return this._ok;
    },
    getOriginalInput: function getOriginalInput() {
      return this._originalInput;
    },
    getFormat: function getFormat() {
      return this._format;
    },
    getAlpha: function getAlpha() {
      return this._a;
    },
    getBrightness: function getBrightness() {
      //http://www.w3.org/TR/AERT#color-contrast
      var rgb = this.toRgb();
      return (rgb.r * 299 + rgb.g * 587 + rgb.b * 114) / 1000;
    },
    getLuminance: function getLuminance() {
      //http://www.w3.org/TR/2008/REC-WCAG20-20081211/#relativeluminancedef
      var rgb = this.toRgb();
      var RsRGB, GsRGB, BsRGB, R, G, B;
      RsRGB = rgb.r / 255;
      GsRGB = rgb.g / 255;
      BsRGB = rgb.b / 255;
      if (RsRGB <= 0.03928) R = RsRGB / 12.92;else R = Math.pow((RsRGB + 0.055) / 1.055, 2.4);
      if (GsRGB <= 0.03928) G = GsRGB / 12.92;else G = Math.pow((GsRGB + 0.055) / 1.055, 2.4);
      if (BsRGB <= 0.03928) B = BsRGB / 12.92;else B = Math.pow((BsRGB + 0.055) / 1.055, 2.4);
      return 0.2126 * R + 0.7152 * G + 0.0722 * B;
    },
    setAlpha: function setAlpha(value) {
      this._a = boundAlpha(value);
      this._roundA = Math.round(100 * this._a) / 100;
      return this;
    },
    toHsv: function toHsv() {
      var hsv = rgbToHsv(this._r, this._g, this._b);
      return {
        h: hsv.h * 360,
        s: hsv.s,
        v: hsv.v,
        a: this._a
      };
    },
    toHsvString: function toHsvString() {
      var hsv = rgbToHsv(this._r, this._g, this._b);
      var h = Math.round(hsv.h * 360),
        s = Math.round(hsv.s * 100),
        v = Math.round(hsv.v * 100);
      return this._a == 1 ? "hsv(" + h + ", " + s + "%, " + v + "%)" : "hsva(" + h + ", " + s + "%, " + v + "%, " + this._roundA + ")";
    },
    toHsl: function toHsl() {
      var hsl = rgbToHsl(this._r, this._g, this._b);
      return {
        h: hsl.h * 360,
        s: hsl.s,
        l: hsl.l,
        a: this._a
      };
    },
    toHslString: function toHslString() {
      var hsl = rgbToHsl(this._r, this._g, this._b);
      var h = Math.round(hsl.h * 360),
        s = Math.round(hsl.s * 100),
        l = Math.round(hsl.l * 100);
      return this._a == 1 ? "hsl(" + h + ", " + s + "%, " + l + "%)" : "hsla(" + h + ", " + s + "%, " + l + "%, " + this._roundA + ")";
    },
    toHex: function toHex(allow3Char) {
      return rgbToHex(this._r, this._g, this._b, allow3Char);
    },
    toHexString: function toHexString(allow3Char) {
      return "#" + this.toHex(allow3Char);
    },
    toHex8: function toHex8(allow4Char) {
      return rgbaToHex(this._r, this._g, this._b, this._a, allow4Char);
    },
    toHex8String: function toHex8String(allow4Char) {
      return "#" + this.toHex8(allow4Char);
    },
    toRgb: function toRgb() {
      return {
        r: Math.round(this._r),
        g: Math.round(this._g),
        b: Math.round(this._b),
        a: this._a
      };
    },
    toRgbString: function toRgbString() {
      return this._a == 1 ? "rgb(" + Math.round(this._r) + ", " + Math.round(this._g) + ", " + Math.round(this._b) + ")" : "rgba(" + Math.round(this._r) + ", " + Math.round(this._g) + ", " + Math.round(this._b) + ", " + this._roundA + ")";
    },
    toPercentageRgb: function toPercentageRgb() {
      return {
        r: Math.round(bound01(this._r, 255) * 100) + "%",
        g: Math.round(bound01(this._g, 255) * 100) + "%",
        b: Math.round(bound01(this._b, 255) * 100) + "%",
        a: this._a
      };
    },
    toPercentageRgbString: function toPercentageRgbString() {
      return this._a == 1 ? "rgb(" + Math.round(bound01(this._r, 255) * 100) + "%, " + Math.round(bound01(this._g, 255) * 100) + "%, " + Math.round(bound01(this._b, 255) * 100) + "%)" : "rgba(" + Math.round(bound01(this._r, 255) * 100) + "%, " + Math.round(bound01(this._g, 255) * 100) + "%, " + Math.round(bound01(this._b, 255) * 100) + "%, " + this._roundA + ")";
    },
    toName: function toName() {
      if (this._a === 0) {
        return "transparent";
      }
      if (this._a < 1) {
        return false;
      }
      return hexNames[rgbToHex(this._r, this._g, this._b, true)] || false;
    },
    toFilter: function toFilter(secondColor) {
      var hex8String = "#" + rgbaToArgbHex(this._r, this._g, this._b, this._a);
      var secondHex8String = hex8String;
      var gradientType = this._gradientType ? "GradientType = 1, " : "";
      if (secondColor) {
        var s = tinycolor(secondColor);
        secondHex8String = "#" + rgbaToArgbHex(s._r, s._g, s._b, s._a);
      }
      return "progid:DXImageTransform.Microsoft.gradient(" + gradientType + "startColorstr=" + hex8String + ",endColorstr=" + secondHex8String + ")";
    },
    toString: function toString(format) {
      var formatSet = !!format;
      format = format || this._format;
      var formattedString = false;
      var hasAlpha = this._a < 1 && this._a >= 0;
      var needsAlphaFormat = !formatSet && hasAlpha && (format === "hex" || format === "hex6" || format === "hex3" || format === "hex4" || format === "hex8" || format === "name");
      if (needsAlphaFormat) {
        // Special case for "transparent", all other non-alpha formats
        // will return rgba when there is transparency.
        if (format === "name" && this._a === 0) {
          return this.toName();
        }
        return this.toRgbString();
      }
      if (format === "rgb") {
        formattedString = this.toRgbString();
      }
      if (format === "prgb") {
        formattedString = this.toPercentageRgbString();
      }
      if (format === "hex" || format === "hex6") {
        formattedString = this.toHexString();
      }
      if (format === "hex3") {
        formattedString = this.toHexString(true);
      }
      if (format === "hex4") {
        formattedString = this.toHex8String(true);
      }
      if (format === "hex8") {
        formattedString = this.toHex8String();
      }
      if (format === "name") {
        formattedString = this.toName();
      }
      if (format === "hsl") {
        formattedString = this.toHslString();
      }
      if (format === "hsv") {
        formattedString = this.toHsvString();
      }
      return formattedString || this.toHexString();
    },
    clone: function clone() {
      return tinycolor(this.toString());
    },
    _applyModification: function _applyModification(fn, args) {
      var color = fn.apply(null, [this].concat([].slice.call(args)));
      this._r = color._r;
      this._g = color._g;
      this._b = color._b;
      this.setAlpha(color._a);
      return this;
    },
    lighten: function lighten() {
      return this._applyModification(_lighten, arguments);
    },
    brighten: function brighten() {
      return this._applyModification(_brighten, arguments);
    },
    darken: function darken() {
      return this._applyModification(_darken, arguments);
    },
    desaturate: function desaturate() {
      return this._applyModification(_desaturate, arguments);
    },
    saturate: function saturate() {
      return this._applyModification(_saturate, arguments);
    },
    greyscale: function greyscale() {
      return this._applyModification(_greyscale, arguments);
    },
    spin: function spin() {
      return this._applyModification(_spin, arguments);
    },
    _applyCombination: function _applyCombination(fn, args) {
      return fn.apply(null, [this].concat([].slice.call(args)));
    },
    analogous: function analogous() {
      return this._applyCombination(_analogous, arguments);
    },
    complement: function complement() {
      return this._applyCombination(_complement, arguments);
    },
    monochromatic: function monochromatic() {
      return this._applyCombination(_monochromatic, arguments);
    },
    splitcomplement: function splitcomplement() {
      return this._applyCombination(_splitcomplement, arguments);
    },
    // Disabled until https://github.com/bgrins/TinyColor/issues/254
    // polyad: function (number) {
    //   return this._applyCombination(polyad, [number]);
    // },
    triad: function triad() {
      return this._applyCombination(polyad, [3]);
    },
    tetrad: function tetrad() {
      return this._applyCombination(polyad, [4]);
    }
  };

  // If input is an object, force 1 into "1.0" to handle ratios properly
  // String input requires "1.0" as input, so 1 will be treated as 1
  tinycolor.fromRatio = function (color, opts) {
    if (_typeof(color) == "object") {
      var newColor = {};
      for (var i in color) {
        if (color.hasOwnProperty(i)) {
          if (i === "a") {
            newColor[i] = color[i];
          } else {
            newColor[i] = convertToPercentage(color[i]);
          }
        }
      }
      color = newColor;
    }
    return tinycolor(color, opts);
  };

  // Given a string or object, convert that input to RGB
  // Possible string inputs:
  //
  //     "red"
  //     "#f00" or "f00"
  //     "#ff0000" or "ff0000"
  //     "#ff000000" or "ff000000"
  //     "rgb 255 0 0" or "rgb (255, 0, 0)"
  //     "rgb 1.0 0 0" or "rgb (1, 0, 0)"
  //     "rgba (255, 0, 0, 1)" or "rgba 255, 0, 0, 1"
  //     "rgba (1.0, 0, 0, 1)" or "rgba 1.0, 0, 0, 1"
  //     "hsl(0, 100%, 50%)" or "hsl 0 100% 50%"
  //     "hsla(0, 100%, 50%, 1)" or "hsla 0 100% 50%, 1"
  //     "hsv(0, 100%, 100%)" or "hsv 0 100% 100%"
  //
  function inputToRGB(color) {
    var rgb = {
      r: 0,
      g: 0,
      b: 0
    };
    var a = 1;
    var s = null;
    var v = null;
    var l = null;
    var ok = false;
    var format = false;
    if (typeof color == "string") {
      color = stringInputToObject(color);
    }
    if (_typeof(color) == "object") {
      if (isValidCSSUnit(color.r) && isValidCSSUnit(color.g) && isValidCSSUnit(color.b)) {
        rgb = rgbToRgb(color.r, color.g, color.b);
        ok = true;
        format = String(color.r).substr(-1) === "%" ? "prgb" : "rgb";
      } else if (isValidCSSUnit(color.h) && isValidCSSUnit(color.s) && isValidCSSUnit(color.v)) {
        s = convertToPercentage(color.s);
        v = convertToPercentage(color.v);
        rgb = hsvToRgb(color.h, s, v);
        ok = true;
        format = "hsv";
      } else if (isValidCSSUnit(color.h) && isValidCSSUnit(color.s) && isValidCSSUnit(color.l)) {
        s = convertToPercentage(color.s);
        l = convertToPercentage(color.l);
        rgb = hslToRgb(color.h, s, l);
        ok = true;
        format = "hsl";
      }
      if (color.hasOwnProperty("a")) {
        a = color.a;
      }
    }
    a = boundAlpha(a);
    return {
      ok: ok,
      format: color.format || format,
      r: Math.min(255, Math.max(rgb.r, 0)),
      g: Math.min(255, Math.max(rgb.g, 0)),
      b: Math.min(255, Math.max(rgb.b, 0)),
      a: a
    };
  }

  // Conversion Functions
  // --------------------

  // `rgbToHsl`, `rgbToHsv`, `hslToRgb`, `hsvToRgb` modified from:
  // <http://mjijackson.com/2008/02/rgb-to-hsl-and-rgb-to-hsv-color-model-conversion-algorithms-in-javascript>

  // `rgbToRgb`
  // Handle bounds / percentage checking to conform to CSS color spec
  // <http://www.w3.org/TR/css3-color/>
  // *Assumes:* r, g, b in [0, 255] or [0, 1]
  // *Returns:* { r, g, b } in [0, 255]
  function rgbToRgb(r, g, b) {
    return {
      r: bound01(r, 255) * 255,
      g: bound01(g, 255) * 255,
      b: bound01(b, 255) * 255
    };
  }

  // `rgbToHsl`
  // Converts an RGB color value to HSL.
  // *Assumes:* r, g, and b are contained in [0, 255] or [0, 1]
  // *Returns:* { h, s, l } in [0,1]
  function rgbToHsl(r, g, b) {
    r = bound01(r, 255);
    g = bound01(g, 255);
    b = bound01(b, 255);
    var max = Math.max(r, g, b),
      min = Math.min(r, g, b);
    var h,
      s,
      l = (max + min) / 2;
    if (max == min) {
      h = s = 0; // achromatic
    } else {
      var d = max - min;
      s = l > 0.5 ? d / (2 - max - min) : d / (max + min);
      switch (max) {
        case r:
          h = (g - b) / d + (g < b ? 6 : 0);
          break;
        case g:
          h = (b - r) / d + 2;
          break;
        case b:
          h = (r - g) / d + 4;
          break;
      }
      h /= 6;
    }
    return {
      h: h,
      s: s,
      l: l
    };
  }

  // `hslToRgb`
  // Converts an HSL color value to RGB.
  // *Assumes:* h is contained in [0, 1] or [0, 360] and s and l are contained [0, 1] or [0, 100]
  // *Returns:* { r, g, b } in the set [0, 255]
  function hslToRgb(h, s, l) {
    var r, g, b;
    h = bound01(h, 360);
    s = bound01(s, 100);
    l = bound01(l, 100);
    function hue2rgb(p, q, t) {
      if (t < 0) t += 1;
      if (t > 1) t -= 1;
      if (t < 1 / 6) return p + (q - p) * 6 * t;
      if (t < 1 / 2) return q;
      if (t < 2 / 3) return p + (q - p) * (2 / 3 - t) * 6;
      return p;
    }
    if (s === 0) {
      r = g = b = l; // achromatic
    } else {
      var q = l < 0.5 ? l * (1 + s) : l + s - l * s;
      var p = 2 * l - q;
      r = hue2rgb(p, q, h + 1 / 3);
      g = hue2rgb(p, q, h);
      b = hue2rgb(p, q, h - 1 / 3);
    }
    return {
      r: r * 255,
      g: g * 255,
      b: b * 255
    };
  }

  // `rgbToHsv`
  // Converts an RGB color value to HSV
  // *Assumes:* r, g, and b are contained in the set [0, 255] or [0, 1]
  // *Returns:* { h, s, v } in [0,1]
  function rgbToHsv(r, g, b) {
    r = bound01(r, 255);
    g = bound01(g, 255);
    b = bound01(b, 255);
    var max = Math.max(r, g, b),
      min = Math.min(r, g, b);
    var h,
      s,
      v = max;
    var d = max - min;
    s = max === 0 ? 0 : d / max;
    if (max == min) {
      h = 0; // achromatic
    } else {
      switch (max) {
        case r:
          h = (g - b) / d + (g < b ? 6 : 0);
          break;
        case g:
          h = (b - r) / d + 2;
          break;
        case b:
          h = (r - g) / d + 4;
          break;
      }
      h /= 6;
    }
    return {
      h: h,
      s: s,
      v: v
    };
  }

  // `hsvToRgb`
  // Converts an HSV color value to RGB.
  // *Assumes:* h is contained in [0, 1] or [0, 360] and s and v are contained in [0, 1] or [0, 100]
  // *Returns:* { r, g, b } in the set [0, 255]
  function hsvToRgb(h, s, v) {
    h = bound01(h, 360) * 6;
    s = bound01(s, 100);
    v = bound01(v, 100);
    var i = Math.floor(h),
      f = h - i,
      p = v * (1 - s),
      q = v * (1 - f * s),
      t = v * (1 - (1 - f) * s),
      mod = i % 6,
      r = [v, q, p, p, t, v][mod],
      g = [t, v, v, q, p, p][mod],
      b = [p, p, t, v, v, q][mod];
    return {
      r: r * 255,
      g: g * 255,
      b: b * 255
    };
  }

  // `rgbToHex`
  // Converts an RGB color to hex
  // Assumes r, g, and b are contained in the set [0, 255]
  // Returns a 3 or 6 character hex
  function rgbToHex(r, g, b, allow3Char) {
    var hex = [pad2(Math.round(r).toString(16)), pad2(Math.round(g).toString(16)), pad2(Math.round(b).toString(16))];

    // Return a 3 character hex if possible
    if (allow3Char && hex[0].charAt(0) == hex[0].charAt(1) && hex[1].charAt(0) == hex[1].charAt(1) && hex[2].charAt(0) == hex[2].charAt(1)) {
      return hex[0].charAt(0) + hex[1].charAt(0) + hex[2].charAt(0);
    }
    return hex.join("");
  }

  // `rgbaToHex`
  // Converts an RGBA color plus alpha transparency to hex
  // Assumes r, g, b are contained in the set [0, 255] and
  // a in [0, 1]. Returns a 4 or 8 character rgba hex
  function rgbaToHex(r, g, b, a, allow4Char) {
    var hex = [pad2(Math.round(r).toString(16)), pad2(Math.round(g).toString(16)), pad2(Math.round(b).toString(16)), pad2(convertDecimalToHex(a))];

    // Return a 4 character hex if possible
    if (allow4Char && hex[0].charAt(0) == hex[0].charAt(1) && hex[1].charAt(0) == hex[1].charAt(1) && hex[2].charAt(0) == hex[2].charAt(1) && hex[3].charAt(0) == hex[3].charAt(1)) {
      return hex[0].charAt(0) + hex[1].charAt(0) + hex[2].charAt(0) + hex[3].charAt(0);
    }
    return hex.join("");
  }

  // `rgbaToArgbHex`
  // Converts an RGBA color to an ARGB Hex8 string
  // Rarely used, but required for "toFilter()"
  function rgbaToArgbHex(r, g, b, a) {
    var hex = [pad2(convertDecimalToHex(a)), pad2(Math.round(r).toString(16)), pad2(Math.round(g).toString(16)), pad2(Math.round(b).toString(16))];
    return hex.join("");
  }

  // `equals`
  // Can be called with any tinycolor input
  tinycolor.equals = function (color1, color2) {
    if (!color1 || !color2) return false;
    return tinycolor(color1).toRgbString() == tinycolor(color2).toRgbString();
  };
  tinycolor.random = function () {
    return tinycolor.fromRatio({
      r: Math.random(),
      g: Math.random(),
      b: Math.random()
    });
  };

  // Modification Functions
  // ----------------------
  // Thanks to less.js for some of the basics here
  // <https://github.com/cloudhead/less.js/blob/master/lib/less/functions.js>

  function _desaturate(color, amount) {
    amount = amount === 0 ? 0 : amount || 10;
    var hsl = tinycolor(color).toHsl();
    hsl.s -= amount / 100;
    hsl.s = clamp01(hsl.s);
    return tinycolor(hsl);
  }
  function _saturate(color, amount) {
    amount = amount === 0 ? 0 : amount || 10;
    var hsl = tinycolor(color).toHsl();
    hsl.s += amount / 100;
    hsl.s = clamp01(hsl.s);
    return tinycolor(hsl);
  }
  function _greyscale(color) {
    return tinycolor(color).desaturate(100);
  }
  function _lighten(color, amount) {
    amount = amount === 0 ? 0 : amount || 10;
    var hsl = tinycolor(color).toHsl();
    hsl.l += amount / 100;
    hsl.l = clamp01(hsl.l);
    return tinycolor(hsl);
  }
  function _brighten(color, amount) {
    amount = amount === 0 ? 0 : amount || 10;
    var rgb = tinycolor(color).toRgb();
    rgb.r = Math.max(0, Math.min(255, rgb.r - Math.round(255 * -(amount / 100))));
    rgb.g = Math.max(0, Math.min(255, rgb.g - Math.round(255 * -(amount / 100))));
    rgb.b = Math.max(0, Math.min(255, rgb.b - Math.round(255 * -(amount / 100))));
    return tinycolor(rgb);
  }
  function _darken(color, amount) {
    amount = amount === 0 ? 0 : amount || 10;
    var hsl = tinycolor(color).toHsl();
    hsl.l -= amount / 100;
    hsl.l = clamp01(hsl.l);
    return tinycolor(hsl);
  }

  // Spin takes a positive or negative amount within [-360, 360] indicating the change of hue.
  // Values outside of this range will be wrapped into this range.
  function _spin(color, amount) {
    var hsl = tinycolor(color).toHsl();
    var hue = (hsl.h + amount) % 360;
    hsl.h = hue < 0 ? 360 + hue : hue;
    return tinycolor(hsl);
  }

  // Combination Functions
  // ---------------------
  // Thanks to jQuery xColor for some of the ideas behind these
  // <https://github.com/infusion/jQuery-xcolor/blob/master/jquery.xcolor.js>

  function _complement(color) {
    var hsl = tinycolor(color).toHsl();
    hsl.h = (hsl.h + 180) % 360;
    return tinycolor(hsl);
  }
  function polyad(color, number) {
    if (isNaN(number) || number <= 0) {
      throw new Error("Argument to polyad must be a positive number");
    }
    var hsl = tinycolor(color).toHsl();
    var result = [tinycolor(color)];
    var step = 360 / number;
    for (var i = 1; i < number; i++) {
      result.push(tinycolor({
        h: (hsl.h + i * step) % 360,
        s: hsl.s,
        l: hsl.l
      }));
    }
    return result;
  }
  function _splitcomplement(color) {
    var hsl = tinycolor(color).toHsl();
    var h = hsl.h;
    return [tinycolor(color), tinycolor({
      h: (h + 72) % 360,
      s: hsl.s,
      l: hsl.l
    }), tinycolor({
      h: (h + 216) % 360,
      s: hsl.s,
      l: hsl.l
    })];
  }
  function _analogous(color, results, slices) {
    results = results || 6;
    slices = slices || 30;
    var hsl = tinycolor(color).toHsl();
    var part = 360 / slices;
    var ret = [tinycolor(color)];
    for (hsl.h = (hsl.h - (part * results >> 1) + 720) % 360; --results;) {
      hsl.h = (hsl.h + part) % 360;
      ret.push(tinycolor(hsl));
    }
    return ret;
  }
  function _monochromatic(color, results) {
    results = results || 6;
    var hsv = tinycolor(color).toHsv();
    var h = hsv.h,
      s = hsv.s,
      v = hsv.v;
    var ret = [];
    var modification = 1 / results;
    while (results--) {
      ret.push(tinycolor({
        h: h,
        s: s,
        v: v
      }));
      v = (v + modification) % 1;
    }
    return ret;
  }

  // Utility Functions
  // ---------------------

  tinycolor.mix = function (color1, color2, amount) {
    amount = amount === 0 ? 0 : amount || 50;
    var rgb1 = tinycolor(color1).toRgb();
    var rgb2 = tinycolor(color2).toRgb();
    var p = amount / 100;
    var rgba = {
      r: (rgb2.r - rgb1.r) * p + rgb1.r,
      g: (rgb2.g - rgb1.g) * p + rgb1.g,
      b: (rgb2.b - rgb1.b) * p + rgb1.b,
      a: (rgb2.a - rgb1.a) * p + rgb1.a
    };
    return tinycolor(rgba);
  };

  // Readability Functions
  // ---------------------
  // <http://www.w3.org/TR/2008/REC-WCAG20-20081211/#contrast-ratiodef (WCAG Version 2)

  // `contrast`
  // Analyze the 2 colors and returns the color contrast defined by (WCAG Version 2)
  tinycolor.readability = function (color1, color2) {
    var c1 = tinycolor(color1);
    var c2 = tinycolor(color2);
    return (Math.max(c1.getLuminance(), c2.getLuminance()) + 0.05) / (Math.min(c1.getLuminance(), c2.getLuminance()) + 0.05);
  };

  // `isReadable`
  // Ensure that foreground and background color combinations meet WCAG2 guidelines.
  // The third argument is an optional Object.
  //      the 'level' property states 'AA' or 'AAA' - if missing or invalid, it defaults to 'AA';
  //      the 'size' property states 'large' or 'small' - if missing or invalid, it defaults to 'small'.
  // If the entire object is absent, isReadable defaults to {level:"AA",size:"small"}.

  // *Example*
  //    tinycolor.isReadable("#000", "#111") => false
  //    tinycolor.isReadable("#000", "#111",{level:"AA",size:"large"}) => false
  tinycolor.isReadable = function (color1, color2, wcag2) {
    var readability = tinycolor.readability(color1, color2);
    var wcag2Parms, out;
    out = false;
    wcag2Parms = validateWCAG2Parms(wcag2);
    switch (wcag2Parms.level + wcag2Parms.size) {
      case "AAsmall":
      case "AAAlarge":
        out = readability >= 4.5;
        break;
      case "AAlarge":
        out = readability >= 3;
        break;
      case "AAAsmall":
        out = readability >= 7;
        break;
    }
    return out;
  };

  // `mostReadable`
  // Given a base color and a list of possible foreground or background
  // colors for that base, returns the most readable color.
  // Optionally returns Black or White if the most readable color is unreadable.
  // *Example*
  //    tinycolor.mostReadable(tinycolor.mostReadable("#123", ["#124", "#125"],{includeFallbackColors:false}).toHexString(); // "#112255"
  //    tinycolor.mostReadable(tinycolor.mostReadable("#123", ["#124", "#125"],{includeFallbackColors:true}).toHexString();  // "#ffffff"
  //    tinycolor.mostReadable("#a8015a", ["#faf3f3"],{includeFallbackColors:true,level:"AAA",size:"large"}).toHexString(); // "#faf3f3"
  //    tinycolor.mostReadable("#a8015a", ["#faf3f3"],{includeFallbackColors:true,level:"AAA",size:"small"}).toHexString(); // "#ffffff"
  tinycolor.mostReadable = function (baseColor, colorList, args) {
    var bestColor = null;
    var bestScore = 0;
    var readability;
    var includeFallbackColors, level, size;
    args = args || {};
    includeFallbackColors = args.includeFallbackColors;
    level = args.level;
    size = args.size;
    for (var i = 0; i < colorList.length; i++) {
      readability = tinycolor.readability(baseColor, colorList[i]);
      if (readability > bestScore) {
        bestScore = readability;
        bestColor = tinycolor(colorList[i]);
      }
    }
    if (tinycolor.isReadable(baseColor, bestColor, {
      level: level,
      size: size
    }) || !includeFallbackColors) {
      return bestColor;
    } else {
      args.includeFallbackColors = false;
      return tinycolor.mostReadable(baseColor, ["#fff", "#000"], args);
    }
  };

  // Big List of Colors
  // ------------------
  // <https://www.w3.org/TR/css-color-4/#named-colors>
  var names = tinycolor.names = {
    aliceblue: "f0f8ff",
    antiquewhite: "faebd7",
    aqua: "0ff",
    aquamarine: "7fffd4",
    azure: "f0ffff",
    beige: "f5f5dc",
    bisque: "ffe4c4",
    black: "000",
    blanchedalmond: "ffebcd",
    blue: "00f",
    blueviolet: "8a2be2",
    brown: "a52a2a",
    burlywood: "deb887",
    burntsienna: "ea7e5d",
    cadetblue: "5f9ea0",
    chartreuse: "7fff00",
    chocolate: "d2691e",
    coral: "ff7f50",
    cornflowerblue: "6495ed",
    cornsilk: "fff8dc",
    crimson: "dc143c",
    cyan: "0ff",
    darkblue: "00008b",
    darkcyan: "008b8b",
    darkgoldenrod: "b8860b",
    darkgray: "a9a9a9",
    darkgreen: "006400",
    darkgrey: "a9a9a9",
    darkkhaki: "bdb76b",
    darkmagenta: "8b008b",
    darkolivegreen: "556b2f",
    darkorange: "ff8c00",
    darkorchid: "9932cc",
    darkred: "8b0000",
    darksalmon: "e9967a",
    darkseagreen: "8fbc8f",
    darkslateblue: "483d8b",
    darkslategray: "2f4f4f",
    darkslategrey: "2f4f4f",
    darkturquoise: "00ced1",
    darkviolet: "9400d3",
    deeppink: "ff1493",
    deepskyblue: "00bfff",
    dimgray: "696969",
    dimgrey: "696969",
    dodgerblue: "1e90ff",
    firebrick: "b22222",
    floralwhite: "fffaf0",
    forestgreen: "228b22",
    fuchsia: "f0f",
    gainsboro: "dcdcdc",
    ghostwhite: "f8f8ff",
    gold: "ffd700",
    goldenrod: "daa520",
    gray: "808080",
    green: "008000",
    greenyellow: "adff2f",
    grey: "808080",
    honeydew: "f0fff0",
    hotpink: "ff69b4",
    indianred: "cd5c5c",
    indigo: "4b0082",
    ivory: "fffff0",
    khaki: "f0e68c",
    lavender: "e6e6fa",
    lavenderblush: "fff0f5",
    lawngreen: "7cfc00",
    lemonchiffon: "fffacd",
    lightblue: "add8e6",
    lightcoral: "f08080",
    lightcyan: "e0ffff",
    lightgoldenrodyellow: "fafad2",
    lightgray: "d3d3d3",
    lightgreen: "90ee90",
    lightgrey: "d3d3d3",
    lightpink: "ffb6c1",
    lightsalmon: "ffa07a",
    lightseagreen: "20b2aa",
    lightskyblue: "87cefa",
    lightslategray: "789",
    lightslategrey: "789",
    lightsteelblue: "b0c4de",
    lightyellow: "ffffe0",
    lime: "0f0",
    limegreen: "32cd32",
    linen: "faf0e6",
    magenta: "f0f",
    maroon: "800000",
    mediumaquamarine: "66cdaa",
    mediumblue: "0000cd",
    mediumorchid: "ba55d3",
    mediumpurple: "9370db",
    mediumseagreen: "3cb371",
    mediumslateblue: "7b68ee",
    mediumspringgreen: "00fa9a",
    mediumturquoise: "48d1cc",
    mediumvioletred: "c71585",
    midnightblue: "191970",
    mintcream: "f5fffa",
    mistyrose: "ffe4e1",
    moccasin: "ffe4b5",
    navajowhite: "ffdead",
    navy: "000080",
    oldlace: "fdf5e6",
    olive: "808000",
    olivedrab: "6b8e23",
    orange: "ffa500",
    orangered: "ff4500",
    orchid: "da70d6",
    palegoldenrod: "eee8aa",
    palegreen: "98fb98",
    paleturquoise: "afeeee",
    palevioletred: "db7093",
    papayawhip: "ffefd5",
    peachpuff: "ffdab9",
    peru: "cd853f",
    pink: "ffc0cb",
    plum: "dda0dd",
    powderblue: "b0e0e6",
    purple: "800080",
    rebeccapurple: "663399",
    red: "f00",
    rosybrown: "bc8f8f",
    royalblue: "4169e1",
    saddlebrown: "8b4513",
    salmon: "fa8072",
    sandybrown: "f4a460",
    seagreen: "2e8b57",
    seashell: "fff5ee",
    sienna: "a0522d",
    silver: "c0c0c0",
    skyblue: "87ceeb",
    slateblue: "6a5acd",
    slategray: "708090",
    slategrey: "708090",
    snow: "fffafa",
    springgreen: "00ff7f",
    steelblue: "4682b4",
    tan: "d2b48c",
    teal: "008080",
    thistle: "d8bfd8",
    tomato: "ff6347",
    turquoise: "40e0d0",
    violet: "ee82ee",
    wheat: "f5deb3",
    white: "fff",
    whitesmoke: "f5f5f5",
    yellow: "ff0",
    yellowgreen: "9acd32"
  };

  // Make it easy to access colors via `hexNames[hex]`
  var hexNames = tinycolor.hexNames = flip(names);

  // Utilities
  // ---------

  // `{ 'name1': 'val1' }` becomes `{ 'val1': 'name1' }`
  function flip(o) {
    var flipped = {};
    for (var i in o) {
      if (o.hasOwnProperty(i)) {
        flipped[o[i]] = i;
      }
    }
    return flipped;
  }

  // Return a valid alpha value [0,1] with all invalid values being set to 1
  function boundAlpha(a) {
    a = parseFloat(a);
    if (isNaN(a) || a < 0 || a > 1) {
      a = 1;
    }
    return a;
  }

  // Take input from [0, n] and return it as [0, 1]
  function bound01(n, max) {
    if (isOnePointZero(n)) n = "100%";
    var processPercent = isPercentage(n);
    n = Math.min(max, Math.max(0, parseFloat(n)));

    // Automatically convert percentage into number
    if (processPercent) {
      n = parseInt(n * max, 10) / 100;
    }

    // Handle floating point rounding errors
    if (Math.abs(n - max) < 0.000001) {
      return 1;
    }

    // Convert into [0, 1] range if it isn't already
    return n % max / parseFloat(max);
  }

  // Force a number between 0 and 1
  function clamp01(val) {
    return Math.min(1, Math.max(0, val));
  }

  // Parse a base-16 hex value into a base-10 integer
  function parseIntFromHex(val) {
    return parseInt(val, 16);
  }

  // Need to handle 1.0 as 100%, since once it is a number, there is no difference between it and 1
  // <http://stackoverflow.com/questions/7422072/javascript-how-to-detect-number-as-a-decimal-including-1-0>
  function isOnePointZero(n) {
    return typeof n == "string" && n.indexOf(".") != -1 && parseFloat(n) === 1;
  }

  // Check to see if string passed in is a percentage
  function isPercentage(n) {
    return typeof n === "string" && n.indexOf("%") != -1;
  }

  // Force a hex value to have 2 characters
  function pad2(c) {
    return c.length == 1 ? "0" + c : "" + c;
  }

  // Replace a decimal with it's percentage value
  function convertToPercentage(n) {
    if (n <= 1) {
      n = n * 100 + "%";
    }
    return n;
  }

  // Converts a decimal to a hex value
  function convertDecimalToHex(d) {
    return Math.round(parseFloat(d) * 255).toString(16);
  }
  // Converts a hex value to a decimal
  function convertHexToDecimal(h) {
    return parseIntFromHex(h) / 255;
  }
  var matchers = function () {
    // <http://www.w3.org/TR/css3-values/#integers>
    var CSS_INTEGER = "[-\\+]?\\d+%?";

    // <http://www.w3.org/TR/css3-values/#number-value>
    var CSS_NUMBER = "[-\\+]?\\d*\\.\\d+%?";

    // Allow positive/negative integer/number.  Don't capture the either/or, just the entire outcome.
    var CSS_UNIT = "(?:" + CSS_NUMBER + ")|(?:" + CSS_INTEGER + ")";

    // Actual matching.
    // Parentheses and commas are optional, but not required.
    // Whitespace can take the place of commas or opening paren
    var PERMISSIVE_MATCH3 = "[\\s|\\(]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")\\s*\\)?";
    var PERMISSIVE_MATCH4 = "[\\s|\\(]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")\\s*\\)?";
    return {
      CSS_UNIT: new RegExp(CSS_UNIT),
      rgb: new RegExp("rgb" + PERMISSIVE_MATCH3),
      rgba: new RegExp("rgba" + PERMISSIVE_MATCH4),
      hsl: new RegExp("hsl" + PERMISSIVE_MATCH3),
      hsla: new RegExp("hsla" + PERMISSIVE_MATCH4),
      hsv: new RegExp("hsv" + PERMISSIVE_MATCH3),
      hsva: new RegExp("hsva" + PERMISSIVE_MATCH4),
      hex3: /^#?([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})$/,
      hex6: /^#?([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})$/,
      hex4: /^#?([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})$/,
      hex8: /^#?([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})$/
    };
  }();

  // `isValidCSSUnit`
  // Take in a single string / number and check to see if it looks like a CSS unit
  // (see `matchers` above for definition).
  function isValidCSSUnit(color) {
    return !!matchers.CSS_UNIT.exec(color);
  }

  // `stringInputToObject`
  // Permissive string parsing.  Take in a number of formats, and output an object
  // based on detected format.  Returns `{ r, g, b }` or `{ h, s, l }` or `{ h, s, v}`
  function stringInputToObject(color) {
    color = color.replace(trimLeft, "").replace(trimRight, "").toLowerCase();
    var named = false;
    if (names[color]) {
      color = names[color];
      named = true;
    } else if (color == "transparent") {
      return {
        r: 0,
        g: 0,
        b: 0,
        a: 0,
        format: "name"
      };
    }

    // Try to match string input using regular expressions.
    // Keep most of the number bounding out of this function - don't worry about [0,1] or [0,100] or [0,360]
    // Just return an object and let the conversion functions handle that.
    // This way the result will be the same whether the tinycolor is initialized with string or object.
    var match;
    if (match = matchers.rgb.exec(color)) {
      return {
        r: match[1],
        g: match[2],
        b: match[3]
      };
    }
    if (match = matchers.rgba.exec(color)) {
      return {
        r: match[1],
        g: match[2],
        b: match[3],
        a: match[4]
      };
    }
    if (match = matchers.hsl.exec(color)) {
      return {
        h: match[1],
        s: match[2],
        l: match[3]
      };
    }
    if (match = matchers.hsla.exec(color)) {
      return {
        h: match[1],
        s: match[2],
        l: match[3],
        a: match[4]
      };
    }
    if (match = matchers.hsv.exec(color)) {
      return {
        h: match[1],
        s: match[2],
        v: match[3]
      };
    }
    if (match = matchers.hsva.exec(color)) {
      return {
        h: match[1],
        s: match[2],
        v: match[3],
        a: match[4]
      };
    }
    if (match = matchers.hex8.exec(color)) {
      return {
        r: parseIntFromHex(match[1]),
        g: parseIntFromHex(match[2]),
        b: parseIntFromHex(match[3]),
        a: convertHexToDecimal(match[4]),
        format: named ? "name" : "hex8"
      };
    }
    if (match = matchers.hex6.exec(color)) {
      return {
        r: parseIntFromHex(match[1]),
        g: parseIntFromHex(match[2]),
        b: parseIntFromHex(match[3]),
        format: named ? "name" : "hex"
      };
    }
    if (match = matchers.hex4.exec(color)) {
      return {
        r: parseIntFromHex(match[1] + "" + match[1]),
        g: parseIntFromHex(match[2] + "" + match[2]),
        b: parseIntFromHex(match[3] + "" + match[3]),
        a: convertHexToDecimal(match[4] + "" + match[4]),
        format: named ? "name" : "hex8"
      };
    }
    if (match = matchers.hex3.exec(color)) {
      return {
        r: parseIntFromHex(match[1] + "" + match[1]),
        g: parseIntFromHex(match[2] + "" + match[2]),
        b: parseIntFromHex(match[3] + "" + match[3]),
        format: named ? "name" : "hex"
      };
    }
    return false;
  }
  function validateWCAG2Parms(parms) {
    // return valid WCAG2 parms for isReadable.
    // If input parms are invalid, return {"level":"AA", "size":"small"}
    var level, size;
    parms = parms || {
      level: "AA",
      size: "small"
    };
    level = (parms.level || "AA").toUpperCase();
    size = (parms.size || "small").toLowerCase();
    if (level !== "AA" && level !== "AAA") {
      level = "AA";
    }
    if (size !== "small" && size !== "large") {
      size = "small";
    }
    return {
      level: level,
      size: size
    };
  }

  return tinycolor;

}));