gistfile1.txt

HEXCHARS = '0123456789ABCDEF'.split('')
rgb2hex = (r,g,b)-> "##{byte2hex(r)}#{byte2hex(g)}#{byte2hex(b)}"
byte2hex = (n)-> String(HEXCHARS.substr((n >> 4) & 0x0F,1)) + HEXCHARS.substr(n & 0x0F,1)
hex2rgb = ( color )->
  triplet = color.toLowerCase().replace /#/ , ''
  rgb = []
  if triplet.length is 6
    rgb[0] = parseInt(triplet.substr(0,2), 16)
    rgb[1] = parseInt(triplet.substr(2,2), 16)
    rgb[2] = parseInt(triplet.substr(4,2), 16)
    return rgb
  else if triplet.length is 3
    rgb[0] = parseInt((triplet.substr(0,1) + triplet.substr(0,1)), 16)
    rgb[1] = parseInt((triplet.substr(1,1) + triplet.substr(1,1)), 16)
    rgb[2] = parseInt((triplet.substr(2,2) + triplet.substr(2,2)), 16)
    return rgb
  else throw triplet + ' is not a valid color triplet.'