In order to get inspired on colors and color-oriented design resources, there are several popular websites that are focused totally on colors, like Kuler from Adobe.
Colrd is another one where you can find high quality color palettes, gradients or patterns and also share your creativity with others.
With a simplistic interface that highlights the resources, it is possible to filter items by colors, popularity and even hue, luminance, etc.
P.S. Colrd has also created and sharing several open source color pickers.
Color Explorer is a free-to-use website which offers various tools to work with colors more efficiently.
You can upload an image to get the colors used in it automatically, browse color libraries (W3 named colors, web-safe colors, Focoltone, etc.), convert them between formats or make contrast analysis.
Optionally, and for free, you can sign-up as a registered member, create color palettes and save them for future use.
And, yes, there is definitely a cool color picker (which can also offer variations).
COLOURlovers, an impressive website/community focused on colors, is sharing a handy tool named COPASO.
The tool is a web-based color palette generator for creating palettes and saving them for future use.
COPASO allows you to pick the colors from a color wheel or upload an image, optionally pixelate it, and grab from there.
There is a built-in search to find colors and palettes generated by the community with a sorting feature using various parameters.
P.S. Some features requires signing-in with a free membership.
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:
Requirements: No Requirements
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..
