Can a black couch and espresso ottoman be used in the same room?

Brown and black can look quite tasteful, if you have other items in the room to complement those colours, perhaps cushions and brown and black and cream rug looks stunning, put a vibrant colour in the room also, perhaps a vivid red vase/ornament or maybe your favourite colour A large mirror, heavy curtains with any or all the room colours in them with tie backs, will finish the look off nicely.