dark walls dark sofa, consider your furniture colors when selecting a wall color. This sofa blends into the walls even though it's a bluer/cooler gray than the walls. More contrast in the colors would set off the sofa.
Great color combination: We love the modest green wall of this living room. It's a perfect match to the comfortable grey couch with a bunch of pillows and this neutral carpet. Great eyecatcher: a beautiful lamp in shape of a light bulb and a white RAR roc