Convert colors to RGB

rgb_hex.js

/*
  This will change:
  
    "rgba(255, 255, 255)" or "#fff"
    
  Into:
  
    #FFFFFF
*/

// Change RBG into Hex colors.
function parseColor(the_color) {
  function toHex(N) {             
    var hex_range = '0123456789ABCDEF';

    if (N === null) {
      return '00';
    }

    N = parseInt(N, 10);

    if (N === 0 || isNaN(N)) {
      return '00';
    }

    N = Math.max(0, N);
    N = Math.min(N, 255);
    N = Math.round(N);

    return hex_range.charAt((N - N % 16) / 16) + hex_range.charAt(N % 16);
  }

  if (the_color.match('#')) {
    the_color = the_color.replace('#', '');

    if (the_color.length !== 6) {
      var R = the_color.slice(0, 1);
      var G = the_color.slice(1, 2);
      var B = the_color.slice(2, 3);

      the_color = R + R + G + G + B + B;
    }
  }
  else if (the_color.match('rgb')) {
    the_color = the_color.replace(/rgb\(|\)| /gi, '').split(',');

    var RED   = the_color[0];
    var GREEN = the_color[1];
    var BLUE  = the_color[2];

    the_color = toHex(RED) + toHex(GREEN) + toHex(BLUE);
  }

  return '#' + the_color.toUpperCase();
}