By introducing lighter and darker versions of the same color we add interest to the garden. An analogous color scheme uses colors next to each other on the color wheel. An example would include the colors red, red-violet and violet. The complementary color scheme uses colors that are directly opposite each other on the color wheel. One of my favorite complementary color schemes is yellow and violet.
Complementary schemes can create quite striking combinations.
A triadic harmony uses three colors that are equal distance from each other on the color wheel. An example would be the colors red, yellow and blue. These combinations provide abundant color and variety in the garden. For best results, keep the color scheme in the garden simple by sticking to one, two or three colors. Avoid a shotgun approach with one color here and one color there.