Mad About Colors: Don Park has a post about color picker products and he links to two great ones: Color Wheel Pro and ColorImpact. I’m utterly brain dead when it comes to colors. I got the colors for this site off EasyRGB and even that was painful.
I did visit the EasyRGB site but I couldn't understand what was going on. Duh!
easy and free!! http://color.twysted.net/
There is another free color picker that can be used in your formulars : http://www.interclasse.com/scripts/colorpicker.php The code is pretty tiny : less than 3kb !