Arte CeDIn

Monochrome: A single color is used, varied in saturation and lightness for several different contrasting shades. Many "skins" for software use a monochromatic color scheme. One problem with this color scheme is that it is difficult to make anything stand out, and the lack of contrast can get monotonous.

Analogous : Here you use the color wheel to pick two colors that are side-by-side. One becomes the dominant color and the other is used to accent. The overall effect is much like the monochrome scheme but offers more hues. However, it still lacks contrast.

Complimentary : Using the color wheel, complementary colors are found opposite each other. This creates high contrast. Again one of the two colors should be dominant. This color scheme is harder to balance in a pleasing way than the aforementioned schemes.

Split complementary: Same as the previous color scheme, however you would also use the two colors either side of the secondary complementary color. This mutes some of the starkness created by the previous scheme.

Triadic : As the name implies this color scheme uses any three colors which form a triangle on the color wheel, equally spaced apart.

Tetradic (or double complementary) : In this case you pick a complimentary pair of colors (opposites), then a second pair to use in tandem. It's important to balance cool and warm colors for the right effect.