Cosmos vs Mercurial

Cosmos and Mercurial come from the same Sherwin-Williams collection. Cosmos reads as blue, while Mercurial reads as greige-grey — two distinct hue families, not close cousins. The 23-point LRV gap — 61 for Mercurial vs 38 for Cosmos — means Mercurial will open up a space more effectively. Where Cosmos leans cool, Mercurial reads warm — a distinction that shifts noticeably depending on the light source and surrounding finishes. A ΔE of 24.5 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.