kuler

well, i've used to different versions of this app, the web based version, and a photoshop plug-in.

the web app is pretty good. there's a vast amount of preexisting color schemes you can choose from, from artists and designers worldwide, also some pretty standard schemes.

you get to see all the different color codes you could possibly need, for computer based work, and it's fully customizable.

another cool feature, possibly the best, is the ability to upload a picture and get a color scheme from it. so if there are any pictures you just really love the feel and look of, you can get all the colors needed to duplicate that feel.

as good as the web app is, the PS app is what i like the most. no need to go back and forth from SP to the kuler site and enter the color codes here and there. just double click the color you want to use and voila! it's your foreground color, visa-versa - minus the double clicking, there's a button on the kuler app for getting the fg color.

i'm not too terribly sure if you can get predefined color schemes from the plug-in, like those found on the site, but i never use them anyways.

either way, it's a brilliant app, and i applaud adobe with there constant efforts to improve digital design work flow.