According to The Atlantic Slave Trade an estimated 200,000 enslaved Africans disembarked in New Spain, which later became modern Mexico.
SEE HERE: https://en.wikipedia.org/wiki/Philip_D._Curtin
From the beginning, the slaves, who were mostly male, intermarried with indigenous women. In some cases Spanish colonists had unions with female slaves. Spanish colonists created an elaborate racial caste system, classifying people by racial mixture. This system broke down in the very late colonial period; after Independence, the legal notion of race was eliminated.
I have been told by numerous people that vestiges of this system still operate in Mexico today. People who have much experience living in Mexico have informed me that all of the wealthy and upper caste are light skinned, mostly Spanish descendents. Most of their popular actors and their ruling class government officials all tend to be light skinned.
From what I have read of their history, status was obtained by claiming Spanish ancestry.