Black and white art posters make room for the character of a line, the shape of a shadow and the subtle steps between grey tones. A photographic scene, a drawn figure or an abstract arrangement can each gain interest from this restrained palette. Monochrome works with both white and coloured walls, and relates comfortably to timber or metal details. It can suit an interior with a clear, uncluttered feel. The balance between light and dark is a useful starting point. An image with more white feels airy, while a stronger presence of black offers a grounded visual accent.