A minimalist bathroom should feel clean and quiet, so this palette keeps things tight and tonal. Soft gray carries the walls — a calm, light-reflecting neutral that flatters both white and stone tile without ever drawing attention to itself.
A crisp white handles the trim, ceiling, and built-ins, keeping the edges sharp and the room feeling bright even in a space with little daylight. To stop the gray-and-white pairing from feeling flat, a pale greige warms one wall or an alcove, adding just enough softness to feel inviting.
The contrast comes from black accent, used only on fixtures and a mirror frame. That single dark note pulls the whole scheme into focus. Keep the palette simple, let the gray lead, and the bathroom reads modern and serene rather than stark.