Introduction to Color Theory – With colors you can set a mood, attract attention, or make a statement. You can use color to energize, or to cool down. By selecting the right color scheme, you can create an ambiance of elegance, warmth or tranquility, or you can convey an image of playful youthfulness. Color can be your most powerful design element if you learn to use it effectively.
ColRD – Create and share color inspiration with the world.
COLOURlovers – COLOURlovers is an international creative community that helps people discover their inner designer.
Pantone – The Color of Ieas. And the language of color.
Color Palette Generator – Make color schemes. Enter the URL of an image to get a color palette that matches the image. This is useful for coming up with a website color scheme that matches a stock photo a client wants to work with.
Color Scheme Designer – Color Scheme Designer is a web application designed to easily create sets of matching color. Color theory used by artists for centuries was transformed into algorithms to combine compatible color combinations while avoiding uncomfortable combinations.
Kuler – Explore, create and share color themes.