Skin tone refers to the color and shade of a person's skin, which is determined by the amount of melanin pigment present in their skin cells. It can vary from very light (almost white) to very dark (nearly black), with many different shades in between. Skin tones are often described using terms such as fair, medium, olive, brown, and deep, among others. The color of a person's skin is influenced by genetics, ethnicity, and environmental factors such as sun exposure.