The caste system is not based on skin color. That was a misreading of ancient Indian texts by colonizers in the 1800s. There are darker skinned people of an upper caste background in South India and vice versa in North India.

It is based purely on pedigree / who you are born to.

The caste system is medieval feudalistic bullshit that needs to be eradicated in all forms from every society.

“The British class system is so complex, so riddled with microscopic nuances and unspoken rules, that it functions essentially as a caste system. It is not about how much money you have; it is about an intricate tribal code of accent, vocabulary, and behavior that is almost impossible to learn later in life.”

Anthropolgist Kate Fox: Watching the English

“Class is a skin on the back of caste… In England, the class system is so rigid, so tied to ancestry, accent, and birth, that it functions essentially as a caste system”

Isabel Wilkerson: Caste: The Origins of Our Discontent

“Nevertheless, the essential point about the English class-system is that it is not entirely explicable in terms of money. Roughly speaking it is a money-stratification, but it is also interpenetrated by a sort of shadowy caste-system; rather like a jerrybuilt modern bungalow haunted by medieval ghosts.”

George Orwell: The Road to Wigan Pier.