In Spanish, what's the politically correct way to call a black and white person?

In my family, for black people, we usually say "moreno" but that can refer to anyone with really dark skin (not necessarily black). The obvious reason for saying "moreno" instead of the actual color black in Spanish is heavily due to the fact we don't want to offend anyone if they were to ever hear us.

For white people, we usually say "güero" but I hear that is usually for someone with blond or red hair.