Adobe Kuler lets you generate your own color themes or you can experiment variations with an an existing palette contributed by the online community. Kuler offers the color wheel, harmony rules, and color sliders for quick customization or you can manually enter the color codes in HEX, RGB or any of the other popular formats.
Kuler also offers color extraction tools to help you generate color themes from an existing image – you can either upload a photograph from the desktop or pick one from your Flickr gallery.
You can search for existing color schemes by HEX codes (like #FFEEDD) and the site provides RSS feeds for the most popular or highly rated themes.
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