One the hardest tasks, at least I find, is picking a good color scheme for a website. There are a number of good color pickers out there, but they all generally work off of a set formula. A good example of them is ColorMixers.com.
Adobe came out with a great innovation when it comes to this task. It’s a new flash based color picker that emulates some of the features in the new CS3 suite and allows for social interaction.
It’s located at kuler.adobe.com
Check it out!