The Fitzpatrick scale – A numerical classification schema for human skin color(en.wikipedia.org)
en.wikipedia.org
The Fitzpatrick scale – A numerical classification schema for human skin color
https://en.wikipedia.org/wiki/Fitzpatrick_scale
https://en.wikipedia.org/wiki/Fitzpatrick_scale
"The Fitzpatrick scale is also the basis of skin color in emoji, with 5 modifiers according to the Fitzpatrick scale (types I and II merged)."