Human skin color, in the appearance, is split up into 6 distinct classes.
| Type | Color | Tanning behavior | Characteristics |
|---|---|---|---|
| I | very light | Often burns, rarely tans. | Tends to have freckles, red, brown, or blonde hair, blue, brown, green or gray eyes. |
| II | light, or light-skinned | Usually burns, sometimes tans. | Tends to have light or dark hair, blue, green, hazel, brown or gray eyes. |
| III | light intermediate, or dark-skinned | Rarely burns, usually tans. | Usually has brown hair and blue, green, hazel, brown, or, rarely, dark brown eyes. |
| IV | dark intermediate, "olive skin" | Rarely burns, often tans. | Tends to have black to dark brown hair and blue, green, hazel, brown or dark brown eyes. |
| V | dark or "brown" type | Naturally brown skin | Black hair and brown or hazel eyes. |
| VI | very dark, or "black" type | Naturally black-brown skin | Black hair and dark brown eyes, with minor variations. |