Gray vs Iron Mountain

Both from Benjamin Moore's palette. Both sit in the grey family, which is useful context if you're narrowing within a single hue direction. They have nearly identical light reflectance values (12 vs 11), so they'll read as similarly Dark in most lighting conditions. Gray runs neutral while Iron Mountain is decidedly red, which means they'll respond very differently to warm vs cool light sources. At ΔE 1.9, these are close — the kind of difference that matters when choosing between them, but doesn't read strongly in a finished room. Below, 5 simulated room previews show how each color reads at scale — real-room photos will be added as they become available.