No, but using the list here you could create one. Something like this:

function colourNameToHex(colour)

{

    var colours = {aliceblue:#f0f8ff,antiquewhite:#faebd7,aqua:#00ffff,aquamarine:#7fffd4,azure:#f0ffff,

    beige:#f5f5dc,bisque:#ffe4c4,black:#000000,blanchedalmond:#ffebcd,blue:#0000ff,blueviolet:#8a2be2,brown:#a52a2a,burlywood:#deb887,

    cadetblue:#5f9ea0,chartreuse:#7fff00,chocolate:#d2691e,coral:#ff7f50,cornflowerblue:#6495ed,cornsilk:#fff8dc,crimson:#dc143c,cyan:#00ffff,

    darkblue:#00008b,darkcyan:#008b8b,darkgoldenrod:#b8860b,darkgray:#a9a9a9,darkgreen:#006400,darkkhaki:#bdb76b,darkmagenta:#8b008b,darkolivegreen:#556b2f,

    darkorange:#ff8c00,darkorchid:#9932cc,darkred:#8b0000,darksalmon:#e9967a,darkseagreen:#8fbc8f,darkslateblue:#483d8b,darkslategray:#2f4f4f,darkturquoise:#00ced1,

    darkviolet:#9400d3,deeppink:#ff1493,deepskyblue:#00bfff,dimgray:#696969,dodgerblue:#1e90ff,

    firebrick:#b22222,floralwhite:#fffaf0,forestgreen:#228b22,fuchsia:#ff00ff,

    gainsboro:#dcdcdc,ghostwhite:#f8f8ff,gold:#ffd700,goldenrod:#daa520,gray:#808080,green:#008000,greenyellow:#adff2f,

    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,

    lightgrey:#d3d3d3,lightgreen:#90ee90,lightpink:#ffb6c1,lightsalmon:#ffa07a,lightseagreen:#20b2aa,lightskyblue:#87cefa,lightslategray:#778899,lightsteelblue:#b0c4de,

    lightyellow:#ffffe0,lime:#00ff00,limegreen:#32cd32,linen:#faf0e6,

    magenta:#ff00ff,maroon:#800000,mediumaquamarine:#66cdaa,mediumblue:#0000cd,mediumorchid:#ba55d3,mediumpurple:#9370d8,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:#d87093,papayawhip:#ffefd5,peachpuff:#ffdab9,peru:#cd853f,pink:#ffc0cb,plum:#dda0dd,powderblue:#b0e0e6,purple:#800080,

    rebeccapurple:#663399,red:#ff0000,rosybrown:#bc8f8f,royalblue:#4169e1,

    saddlebrown:#8b4513,salmon:#fa8072,sandybrown:#f4a460,seagreen:#2e8b57,seashell:#fff5ee,sienna:#a0522d,silver:#c0c0c0,skyblue:#87ceeb,slateblue:#6a5acd,slategray:#708090,snow:#fffafa,springgreen:#00ff7f,steelblue:#4682b4,

    tan:#d2b48c,teal:#008080,thistle:#d8bfd8,tomato:#ff6347,turquoise:#40e0d0,

    violet:#ee82ee,

    wheat:#f5deb3,white:#ffffff,whitesmoke:#f5f5f5,

    yellow:#ffff00,yellowgreen:#9acd32};



    if (typeof colours[colour.toLowerCase()] != 'undefined')

        return colours[colour.toLowerCase()];



    return false;

}