Which colors are opposite each other on the color wheel considered?

Colors that are opposite each other on the color wheel are known as complementary colors. This relationship is significant in color theory because complementary colors, when placed next to each other, create a strong contrast and enhance each other's visual intensity. They are often used in hair coloring to achieve striking and dynamic looks, as well as to neutralize unwanted tones.

In practical applications, for instance, a stylist might use a complementary color to counteract brassy tones in hair; for example, green is opposite red, so a green-based toner can be applied to neutralize red tones. Understanding complementary colors helps stylists create balanced and harmonious color combinations that work well together in various styling and coloring techniques.