ColoRotate is a free web-based service that helps to work with colors in 3D, in real time & offers an unique experience.

Using the application, you can quickly see the multidimensional nature of colors and the relationships between colors.

With ColoRotate, you can create color palettes & save them. Its quick drag-and-drop interface to adjust hue, brightness & saturation helps you customize the colors with ease.

And, palettes created can be imported & exported in Adobe Swatch Exchange (ASE).

ColoRotate is also a color community where it is possible to browse & search themes created by other users.

P.S. You may also want to check "Learn About Color" menu of ColoRotate where it is possible to find valuable information on color like:

• How do we perceive color?
• Color models
• & more

Color Scheme Designer is a web-based application that provides a high quality experience for creating color schemes online.

The color wheel lets users to define a scheme based on a single color or more by adding more controls to it.

With 15+ presets, ability to control the saturation/brightness & contrast levels, it is possible to switch between variaties of the color schemes created.

A great feature is the ability to preview the colors used on different outputs like a scheme or a webpage preview.

Colourlovers.com is a website where you can find lots of user created colors, palettes & patterns. Download them easily, share the ones you have or ask for opinions.

There is also lots of information about colour trends, creating a colour and so..