function SplitRGB(color)
{
  color = getHexRGBColor(color); 
  var matches = color.match(/^#?([\dabcdef]{2})([\dabcdef]{2})([\dabcdef]{2})$/i);
    
  if (!matches) return false;
  
  for (var i=1, rgb = new Array(3);  i<=3; i++) rgb[i-1] = parseInt(matches[i],16);
  
  return rgb;
}

// пример использования
var rgbArr = splitRGB("4B7EBF");
var R = rgbArr[0];
var G = rgbArr[1];
var B = rgbArr[2];