4 Add to the colors
The next step is to add more colors. Select any of the colors, and locate it on the color wheel. The purpose of a color wheel is to show you a color’s relationship to other colors.
Pick any of the photo’s colors—let’s use this blue—and find its general vicinity* on the color wheel. We’ll call this the base color. We already know that the base color goes with the photo. Our job now is to find colors that go with the base color. Keep in mind that if type or other graphics are involved (pretty typical), you’ll need both dark and light colors for contrast.