Your skin is kinda white though.
It’s actually not, but in any case, being white as a race (as in, the Causasoid race) doesn’t actually have much to do with the colour of your skin, biologically speaking. It’s actually about the particular phenotypes you possess. There are four major divisions of the human race, Caucasoid, Negroid, mongoloid and Australoid. Each can be subdivided into a great many groups, but ethnographically, every human being on the planet can be said to come from one of these four groups. For example, European people are classed as Caucasoid, but obviously, there is a great variation in skin colour across Europe, so these people aren’t Caucasian because their skin is literally white, they’re Caucasian because the phenotypes they possess are specific to that particular group. Ethnicity-wise, being Caucasian doesn’t mean that you can’t be ethnically diverse, it just means that the (incredibly small) amount of genetic variations you have put you in one class of people.
Respectively, the Negroid and Mongoloid races can be subdivided into many other ethnic groups, all with a great amount of variation when it comes to skin colour, you see it a lot in places like South America and India, where some people are considered ‘pale’ or ‘dark’ depending on the paradigm/stereotype. The Australoid race is still under ‘debate’ genetically speaking because it’s not certain whether the variations in phenotypes are sufficient enough to classify them as separate race or a subdivision of the Negroid race. And the phenotypes generally have more to do with your bone morphology, I.e. your facial features (Caucasiods will have high foreheads, narrow faces and long, narrow noses, Negroids will have high foreheads, wider faces and low, broad noses with a characteristic depression much like an elegant ‘s’-shape when viewed in profile, and Mongoloids will have low foreheads, wide cheekbones, and low, broad noses). But again, there is a greater amount of variation still, because obviously, people like myself who are mixed race, will have phenotypes characteristic of each.
But honestly, the biology of race is all a little impersonal (as I’m sure you can see) and I personally prefer to talk about this kind of thing in terms of ethnicity and culture rather than dehumanise others for the colour of their skin. Try it some time.