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.
Color Details
Cosmos vs Mercurial Simulated Comparison
5 simulated room previews — drag the slider on each to see Cosmos on one side and Mercurial on the other.
Digital color is approximate. These simulations are generated from the manufacturer's hex values and overlaid on grayscale room photos — your screen's calibration, brightness, and viewing angle all affect how they render. Before committing to either color, test physical samples in your own space under the light you actually live with.
More Cosmos comparisons
See how Cosmos stacks up against other well-photographed colors across different brands and tones.
