Match Iron Mountain
Benjamin Moore Iron Mountain is a deep, low-reflectance shade, neutral in character with an LRV of 11. The matches below are ranked by ΔE, a perceptual color-difference score.
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Closest matches across every brand
One match per brand, ranked by ΔE — a perceptual color difference score calculated from Lab color space values. Lower is closer. Click any card to compare side by side in simulated rooms.
With LRVs of 11 and 9, the two reflect almost the same amount of light. At ΔE 0.0 you'd need them side by side to tell them apart.
Silver Drop reflects far more light (LRV 70 vs 11), opening up a space where Iron Mountain encloses it. At ΔE 1.3 you'd need them side by side to tell them apart.
Their light reflectance is nearly identical (LRV 11 vs 9), so neither reads brighter in a room. A ΔE of 1.8 means the difference barely reads in a finished room.
With LRVs of 13 and 11, the two reflect almost the same amount of light. At ΔE 1.8 you'd need them side by side to tell them apart.
With LRVs of 11 and 10, the two reflect almost the same amount of light. At ΔE 1.9 you'd need them side by side to tell them apart.
Their light reflectance is nearly identical (LRV 12 vs 11), so neither reads brighter in a room. A ΔE of 1.9 means the difference barely reads in a finished room.
With LRVs of 11 and 10, the two reflect almost the same amount of light. At ΔE 2.1 you'd need them side by side to tell them apart.
Their light reflectance is nearly identical (LRV 11 vs 8), so neither reads brighter in a room. A ΔE of 2.3 means the difference barely reads in a finished room.
Their light reflectance is nearly identical (LRV 11 vs 10), so neither reads brighter in a room. A ΔE of 2.3 means the difference barely reads in a finished room.
With LRVs of 11 and 9, the two reflect almost the same amount of light. At ΔE 2.7 you'd need them side by side to tell them apart.
Their light reflectance is nearly identical (LRV 11 vs 11), so neither reads brighter in a room. A ΔE of 2.8 means the difference barely reads in a finished room.
Their light reflectance is nearly identical (LRV 11 vs 11), so neither reads brighter in a room. The ΔE 3.4 gap is real but not dramatic — distinct as a choice, harmonious together.
Their light reflectance is nearly identical (LRV 11 vs 9), so neither reads brighter in a room. The ΔE 3.9 gap is real but not dramatic — distinct as a choice, harmonious together.
Sea Grove reads slightly lighter (LRV 15 vs 11), a gap that shows most in low-lit rooms. At ΔE 10.2 these are two genuinely different directions, not variations on a theme.