In many countries it’s an indicator of lack of status. In countries where everyone’s the same ethnicity, darker skin has indicated those who worked outdoors, with their hands, lighter, those more privileged, with access to education, who worked indoors. Even in countries that were largely homogeneous, a certain amount of "colorism" has existed. The Eurocentric standards of beauty have also been a lasting effect of colonialism.
@bijouxbroussard I'm reading Wives and Daughters, a nineteenth-century novel by Elizabeth Gaskell set in rural England. The main character, a 17 year old girl, was given cream to lighten her skin (which was quite deeply tanned by a long summer spent outdoors) because her aristocratic patron thought it did not fit her social station 😟