Choosing a suitable color at a suitable place is extremely important when you design a web project. For example, CSS Juice mainly use white and gray for body and black for header and footer. There are some of the best color tools web service on the internet to help you decide which to try, because it’s so important to a design’s success.

1. Color Explorer - a free set of tools that include color matching and libraries of color. It’s well developed and has another fantastic interface.

2. Pro Color Palette Software from Colourlovers - includes a photo tool to extract colors from an image, an advanced color picker and color theory wheel to give you your inspiration, and it lets you save the colors you’ve been working with.

3. Colour Lovers - a website run by Darius A Monsef IV. Visitors can find, rate, review and love colours in a mass of different variations. For Moo, they've created juicy stripes, in pure colours that look yummy at any size.

4. Contrast-A - allows you to experiment with various color combinations, review your colors accessibility, and create color palettes.

5. Daily Colorscheme - can help you discover new color combinations that you hadn’t thought of before, also a great source for color inspiration.

6. Adobe Kuler - free web app for themes that can inspire your design. No matter what you’re creating, with Kuler you can experiment quickly with color variations and browse thousands of them.

7. Check My Color - check the foreground and background of color combinations and gives you the option to determine whether the color variation is suitable for individuals with vision impairments.

8. Color Combos - you can find the perfect color combination for your design. It allows you to select and test the website color combination.

9. Colors Palette Generator -  run one of the biggest CSS galleries around, and there’s no reason why you couldn’t upload an image from that gallery to see the original palette and how it was used.

10. Colr.org - a pretty cool little application to help you devise colour schemes. I particularly like the idea behind pointing to an image somewhere online and then colr.org takes a select range of colours from the image to form a new colour pallete.

11. Color Schemer Online v2 - has 16 boxes which contain matching color ideas, simply pick a color and it automatically generates matching colors for your art work.

12. Color Palette Generator - a color palette based on an image; upload the image you want and it grabs the color scheme for your art work.