Measure the sofa width and aim for the art (or grouping) to span two-thirds of it. For a standard 84-inch sofa, that's a 36x48 single piece, a 24x36 + two 18x24 trio, or a tightly-hung gallery cluster. Hang the centre 6-10 inches above the cushion line.

Choose wall art that echoes two colours already present (cushions, rug, curtains) rather than introducing a third. If the room is heavily neutral, the art can carry the accent; if the room is already colourful, lean tonal — a muted landscape or soft abstract reads as intentional rather than busy.

A single statement piece is the cleaner, more modern choice and the easier hang. Gallery walls work when you have an unbroken stretch of wall and want a collected, layered feel — keep frames in a shared style and treat the grouping as one shape that's two-thirds of the wall.

It shouldn't match — it should converse. Pull one colour the sofa already shows (or a complementary tone) and let the art bring contrast in scale, texture, or palette temperature. A warm-toned print over a cool sofa is often what makes the room feel composed.