19+ Natural Skin Tone Colors US. If your veins have a blue shade or hue under natural light, your skin undertone is categorized as cool. Skin tone depends upon the amount of melanin as well as vitamin d your body is able to produce.
If your veins have a blue shade or hue under natural light, your skin undertone is categorized as cool.
In order to simplify this procedure, many people will classify them into three categories, warm, cool and neutral. However, the skin tone/skin undertone rule still applies; If your skin tone is ruddy, choosing an ash or cool hair color can help tone down any redness instantly! You might have the wild card of the bunch—olive skin—which is a combination of the natural neutral.