For example, the Federal Express site, aside from being a technological marvel, has translated a very strong corporate identity to the Web, with its widely recognized purple and orange. A basic color wheel consists of 12 colors. As you'll probably remember from grade school, the three primary colors are yellow, red, and blue. The remaining six colors are tertiary and are created by mixing a primary and secondary color. Relationships between colors on the wheel are either complementary, analogous, or triadic.
Complementary colors are directly across the color wheel from one another.
This direct opposition of color sets up a strong, bold dynamic, as the colors will resonate, especially if they are juxtaposed. Analogous compositions are harmonious because two of the colors contain the third. Because of their relationship around the color wheel, triadic colors can be very balanced. How Are Colors Specified On the Web, you can specify colors exactly in two ways. The document will draw the same way with Internet Explorer, with the exception of the visited link, which is green.