Use harmonizing, complementary, and opposite colors to create contrast. Be careful with the value of the colors as well. For example, harmonizing colors (adjacent to each other on the color wheel) can appear washed out if there is not enough difference in the values of each color.ontrast occurs when two elements are different. The greater the difference the greater the contrast. The key to working with contrast is to make sure the differences are obvious. Four common methods of creating contrast are by using differences in size, value, color, and type.