A split complement combination is created when a hue and the two colors on either side of its complement are used together. The effect of this color scheme is similar to using complementary colors, except that it offers the artist a little more variety with which to work. Warm and cool colors are two specific sets of analogous colors. Blue, green and purple are cool colors. Red, orange and yellow are warm colors.
Warm colors create a warm, sunny feeling.
The use of cool colors produces a cold, icy feeling. When used together, cool colors seems to move away from the viewer while warm colors moved toward the viewer. A monochromatic color scheme is a one that uses shades, tints and tones of only one color. Although using such a limited palette runs the risk of creating a boring design, it also causes an immediate unifying or harmonious effect. In other words, all parts of the design have something in common, which therefore pulls it all together.