The original skin pigment of Caucasians. In the winter in cold areas of the world, it is required to bundle up in clothing to keep warm and are further away from the sun all season, thus less tanning. After prolonged periods of time away from the sun's rays, the skin returns to it's original color; Winter White.
Person 1: "Wow! Your tan is so even! How do you do it?"
Person 2: "What are you talking about? I haven't been tanning. It's February! This is my winter white."