Mountain Air vs Rembrandt Ruby

Mountain Air and Rembrandt Ruby come from the same Sherwin-Williams collection. Hue-wise, Mountain Air belongs to the blue-grey family and Rembrandt Ruby to the pink-red family. The 61-point LRV gap — 73 for Mountain Air vs 13 for Rembrandt Ruby — means Mountain Air will open up a space more effectively. Where Mountain Air leans cool, Rembrandt Ruby reads warm — a distinction that shifts noticeably depending on the light source and surrounding finishes. A ΔE of 59.1 puts these firmly in different territory — two distinct design choices rather than close alternatives. Below, 5 simulated room previews show how each color reads at scale — real-room photos will be added as they become available.