What colors make a room look bigger?

Light and cool colours create the optical illusion of more space by reflecting light back into the room rather than absorbing it. Off-whites, pale greys, soft beiges, and pastel blues and greens are the most effective choices for making a small room feel larger. The key is to keep the colour value high — meaning choose the lightest shade of a given hue rather than a saturated mid-tone. Painting the ceiling the same colour as the walls, or one shade lighter, removes the visual boundary between the two surfaces and increases the perceived height of the room. Using a single colour throughout — walls, trim, and ceiling in closely related tones — creates a continuous surface that reads as larger than a room divided by multiple contrasting colours. Avoid warm, dark, or highly saturated tones in small rooms; colours like deep red, forest green, or charcoal draw the walls visually inward.