A: One of the best tools I've seen for helping gardeners match colors is a plastic gizmo called the "Gardener's Color Wheel." It was developed by garden writer Sydney Eddison and costs only $15 ...

Since green and blue are next to each other on the color wheel, that makes them analogous colors, and this bedroom is a perfect study in understanding how to use the cool tones.

Use a color wheel to choose complementary colors. (Dreamstime) I don’t know about you, but that was the point when young me started scratching my head, thinking those colors look terrible together.

Triadic colors are any three colors that are equally apart on the color wheel. For example, red, yellow and blue. The Triadic scheme is also high-contrast, but more balanced than complementary colors.