This is a list of 25 free color related web applications to create color palettes, edit color palettes, create color themes, test colors and color palettes against a myriad of variables, find color palettes from images, and more.
I've put together a nice list of websites offering free color resources for the internet masses. Most of these sites offer some sort of online web application for you to use in your creating process, but they all offer something of value for the graphic designer, web designer, photographer, etc.