Colorius!

Generates color themes that can inspire any project. No matter what you're creating, with Kuler you can experiment quickly with color variations and browse thousands of themes from the Kuler community.

A minimal web based color picker for HEX and RGB color codes

With Colllor it is much easier to generate a consistent color palette with just a few clicks. You should use colors consistently, so you have a common look and feel throughout your design. All the alternative proposals produced by Colllor derive from the same color and they all have a common denominator sharing hue, lightness or saturation values. This tool will let you find the exact value of darker shades of any color, not just something that 'looks darker'. That will be a huge step towards professionally looking color combinations. »

The ultimate online tool to extract dominant colors from images using the most advanced clustering algorithms.

stylize.io helps web developers and designers create color schemes for their websites, with maximum ease and efficiency. stylize.io can suggest attractive color schemes as a starting point for your web designs, and lets you experiment with color and font combinations, on live websites. Using stylize.io’s control panel, you can load many external websites into stylize.io’s display frame, and modify their background colors, text colors, and fonts. There’s no more need to use confusing palette tools, or to spend ages modifying CSS files, to find an appropriate color scheme – you can create beautiful designs in an instant, with stylize.io. »

Generate a color palette from PNG, JPG or GIF image/photo. Receive color suggestions, download Photoshop swatches (.ACO)

palette.ninja is an online color scheme generator that allows you to create harmonious color schemes in seconds.

Simply put, ColorExplorer is an online toolbox for working with color palettes.

Browse color paletter, or create your own. Adjust, mix and blend to your heart's content.

Colorwheely generates an RGB or RYB color wheel, based on one or two specified colors.