Although many people wrongly feel that wearing brown slacks and a black top together is a fashion faux pas, this is not the case. In the world of fashion, black and brown are both neutral colours that go with a wide range of hues. Neutrals don’t clash and can be matched with almost any colour.
Black and brown, on the other hand, rarely go together in a shoe/belt combo. Dark brown is the only exception, as it is so dark in hue that it can almost pass for black.