Ironclad vs Sea Mariner

Both from Sherwin-Williams's palette. Ironclad reads as grey, while Sea Mariner reads as blue-grey — two distinct hue families, not close cousins. Ironclad (LRV 11) reflects noticeably more light than Sea Mariner (LRV 7), a difference of 4 points that becomes especially apparent in rooms with limited natural light. Ironclad runs neutral while Sea Mariner is decidedly cool, which means they'll respond very differently to warm vs cool light sources. With a ΔE of 14.2, the contrast is hard to miss. These aren't variations on a theme — they're two different answers to the same question. Below, 5 simulated room previews show how each color reads at scale — real-room photos will be added as they become available.