Colonnade Gray vs Viaduct

Both from Sherwin-Williams's palette. Both sit in the greige-grey family, which is useful context if you're narrowing within a single hue direction. Colonnade Gray (LRV 53) reflects noticeably more light than Viaduct (LRV 50), a difference of 3 points that becomes especially apparent in rooms with limited natural light. Both lean warm, so they'll behave similarly in mixed or changing light conditions. At ΔE 1.9, these are close — the kind of difference that matters when choosing between them, but doesn't read strongly in a finished room. Below, 5 simulated room previews show how each color reads at scale — real-room photos will be added as they become available.