Do accent walls still work (and how do you do one well)?
Answer
Yes — accent walls fail as a trend, not as a tool. They work when the wall is the room's natural focal point (fireplace, bed head, TV wall), the color is two or three steps deeper than the other walls, and the room gets one accent, not three.
Accent walls went out of fashion because most of them were done badly, not because the idea expired. A wall of color is still the cheapest structural-feeling change a room can get. The difference between a good one and a dated one is four decisions.
Pick the wall that already leads. An accent belongs to the surface your eye lands on anyway: behind the fireplace, the headboard wall, the alcove with the shelving. Painting a random side wall competes with the room's natural focus and produces the restless, why-is-that-wall-blue feeling. If no wall leads, the room doesn't need an accent — it needs better furniture placement.
Go two or three steps deeper, not twelve. A charcoal-green wall in a room of warm whites reads intentional. A fire-engine red wall in a greige room reads like a dare. Take your base color and deepen or warm it two to three shades, or pull a muted tone already present in art, rug, or upholstery. Deep colors hide imperfections; bright ones broadcast them.
One accent per room. Not one per wall. The moment a second wall joins, the device collapses and you've simply painted a room. Related spaces — an open-plan living and dining area — can share one accent across a corner, but that's the ceiling of the technique.
Mind the light. North light deepens already-dark colors toward gloom; test the accent shade at dusk, when lamps are on, because that's when the room will actually be used. South-facing rooms carry deep color easily.
Cheap to try before committing. Because it's one wall, an accent is the ideal paint candidate for previewing: render the accent wall on a photo of your room, compare three depths side by side, and only then buy the gallon — start free.