Knowing what hair color complements you involves understanding your skin's undertones. If your skin has cool undertones (bluish or pinkish hue), hair colors on the cool side of the color wheel, like platinum blonde, ash brown, or burgundy, will likely complement your skin. On the other hand, if your skin has a warm undertone (yellow, peachy, or golden hue), hair colors on the warm side of the color wheel, like golden blonde, coppery red, or a warm chestnut brown, would suit you best. For those with neutral undertones, a broad range of hair colors from both sides of the wheel could work well.