Your skin undertone is different from your skin tone, which is the surface colour of your skin. While this surface colour of your skin may develop a tan during the summers or pale in the winters, your skin undertone remains consistent throughout. There are three different skin undertones, i.e., cool, warm and neutral. Make sure that your hair colour compliments your skin undertone. Individuals with warm skin undertones should opt for warm colours such as copper, whereas those with cool skin undertones should choose cool colours like walnut brown.