Kuler is an easy-to-use online tool for creating color palettes for your websites. You can create a theme from scratch around your favorite color, edit another user’s theme, or upload a photo and select colors from it.
The program lists the RGB and HEX values for each color. You can save your theme on the site or export it to an Abode swatch file for use in Photoshop and Illustrator.
If you save the theme on the Kuler site you can easily share it; I find this very useful when setting up color schemes for website clients.