Kuler
Adobe’s Kuler color palette gallery is one of the better color palette galleries out there. You can browse or search more than 10,000 color palettes submitted by Kuler users and then download or save your favorites for later reference. Kuler also includes a really powerful palette creation tool that lets you select colors with sliders or based on HSV, RGB, CMYK, LAB or hex color values. Setting any color as the base color will then change the surrounding colors to complement.
