Here’s a powerful website that helps you with picking colors for web design: Kuler by Adobe at http://kuler.adobe.com/
Before using the website, you need to create an account with Adobe. You can do so by clicking on the upper right “Register.”
After you created an account with Adobe, here are the things you can do:
Thing 1: You can pick color themes that you like.
Thing 2: Under each theme, you can click on the upper right corner to view the color code or even modify the colors.
Thing 3: Create your own color theme.
Thing 4: Create your own color theme by from an image you have.