An excellent way to convey emotion and branding with your website is by selecting the best colors. This is especially true when building a website from templates, since you certainly want to distinguish the look of your site from the others who have used the very same base template files.
The Adobe Kuler site provides an enormous variety of color palettes for you to select from. Search for website colors based upon rating, popularity, keywords, and much more. This is my favorite color site.
Web 2.0 Color Palette
Web 2.0 Color Pallete provides a simple listing of the three most used colors across the most popular websites. It’s a good starting place, but I recommend tweaking their suggestions (since these colors are already being used on the most popular sites on the web).
You can search colorlovers and find a wide range of color codes and pallets from this website. This community-driven site gives you a comfy home to discuss all things color.
ColorJack is a massive color palette. Each color contains additional related colors in the same hue family. Colors are pre defined so you can’t generate your own; nonetheless, this is a solid resource if you’re seeking a pre-defined set of colors.