Occasionally I need to take an image and make some design judgment calls to incorporate an image into a website or some other design / print item. Somedays, my creativity doesn’t fire on all cylinders and I want to simply the process of choosing colors that work with my graphic element. The following websites have tools / resources I have found useful for generating color palette’s and getting quickly to complimentary colors.
Color Palette Generator
http://www.degraeve.com/color-palette/
This is a very easy to use site that you can quickly point to your image and it generates a quick color palette that helps you get up and running quickly.
CSS Drive Colors Palette Generator
http://www.cssdrive.com/imagepalette
This tool provides a more complete color palette than the previous tool. Same idea, but provides a more well rounded view of the colors of your image.
Color Scheme Designer
http://colorschemedesigner.com
This tool is just plain elegant. Not only can you pick a color, but it provides other colors that would work well with your selected image. This site also has the ability to give you a preview of the your selected color actually implemented in a website!
Adobe Kuler
http://kuler.adobe.com/#create/fromacolor
Nothing new to be shared here, but Adobe Kuler continues to be a great tool for finding complimentary colors. With many different modes and many different ways of exploiting the color wheel, this tool needs to be mentioned and should remain in any toolbox!