Color Picker Online is a real simple website. It gives you different options to help you select colors for any project you’re working on. You can manually type in your hex color and instantly see variations (shades and tints), color combinations (complimentary, analogous, triadic and more), even contrasting colors.

The main feature I like is the option to upload you’re own image and have it generate a color palette based on your upload (see above).

Go check them out.