Color combination is the most important things while you are decorating your house. If you choose the right combination or contrast, you simply increase the beauty of your house ten folds. However, most of the people experience this problem of mixing and matching when they are doing their homes.
Black normally goes with all the colors. However, all kinds of neutral shades go with it like skin, beige, light brown etc. However, if you really want to add some color to your living room and make it look bright and lively, I would suggest you go for the color red. Keep the rest of the walls plain. And paint the wall at the back of the couch with deep red paint. It would brighten your living room and the couch will stand out.
