If you have no idea which color to choose for this particular project or looking for inspiration and something original or just like to have fun with colors, there are some valuable resources for graphic designers, web designers and illustrators.

Colr.org is a nice online tool to search by color codes or tags and pull colors from websites and pictures. It’s also useful to make color schemes from random Flickr photos or your own photos. More than 56 000 tagged colors and more than 10 000 schemes are available. It’s a perfect idea to pool colors from photos of animals or nature since in most cases it gives you proper and impressive combinations.

COLOURlovers is a social network of people interested in color trends. You can discover modern trends in color combinations both in popular magazines and in popular websites. It can impress even professionals with its approach to colors.The COLOURlovers is a place to check out a world of color, compare color palettes, submit news and comments, and read color related articles and interviews.

ColorBlender is another handy online tool for color matching and palette design. To get started, choose a preferred color using the color picker below, and a 6-color matching palette (a “blend”) will be automatically calculated. You can save these blends both as Photoshop Color Table (.act) or Illustrator Colors (.eps). You can also browse thousands of color blends and find awesome palettes created by other users.

Colorcombos is a helpful site with a similar functionality to Colr.org but it is more focused on web design beside looking for tagged perfect color combinations and color schemes.  Colorcombos.com allows web developers to see how different color combinations work together on the screen. This site was built to help web developers quickly select and test website color combinations.

Colorjack sphere is one of the best colorwheels to find exact opposites and compliments in colors. It provides you useful colourwheel to build color schemes and palettes. You can choose preferred color harmonies, spectrum and save results as Photoshop or Illustrator swatches. Sphere supports 18 formulas and 9 color blindness simulations designed to help you choose the right color scheme for your project.

Built using Adobe Flash and ActionScript 3.0 Kuler from Adobe Labs is one of the most comprehensive online color tools. Besides fantastic colorwheel, tagged color search, colors search by rating and popularity, it provides color values in Hex, RGB, HSV and even in CMYK and LAB. Kuler features include RSS feeds of the most popular, highest rated and newest color themes.