I found a very interesting website for color theory that allows you to drag and drop a range of colors into either three blocks side by side, two blocks side by side and a bar through the two or into elements of a normal website. Just to give you a quick and easy idea of what colors will go well together.

Helpful for us color theory challenged designers.

http://www.mundidesign.com/webct/

Sweet website, thank you very much for that resource.

Its not mine but I also like colorschemer.com