Rushing River vs Sea Mariner

Rushing River and Sea Mariner come from the same Sherwin-Williams collection. Rushing River reads as greige-grey, while Sea Mariner reads as blue-grey — two distinct hue families, not close cousins. The 27-point LRV gap — 34 for Rushing River vs 7 for Sea Mariner — means Rushing River will open up a space more effectively. Where Rushing River leans warm, Sea Mariner reads cool — a distinction that shifts noticeably depending on the light source and surrounding finishes. A ΔE of 36.2 puts these firmly in different territory — two distinct design choices rather than close alternatives. Below you'll find 1 real-room photo comparison where both colors appear side by side, plus 5 simulated room previews.