Skin tone is the surface color of the skin, while undertone refers to subtle hues beneath the skin's surface. Your skin tone color codes fall under 4 major categories: Fair, light, medium, and dark. Dive deep into skin tones and undertones with expert insights, cultural influences, makeup matching tips, and more. Knowing your skin tone can be helpful in many ways--it can help you choose the right lipstick color, figure out which hair color is most flattering, and know which colors you should wear to really look like a knockout. A step-by-step guide on how to find your undertone and skin tone to discover your perfect match for makeup, fashion, and hair color.