This one is very nice, a simpler one can be found here (Broken link ~~http://mediagods.com/tools/color_helper.html~~). This (Broken link http://mediagods.com/tools/rgb2hex.html) is a simple RGB to hex converter and finally there are some (Broken link http://mediagods.com/tools/) usefull other tools on MediaGods.com (Broken link http://mediagods.com/)