Match Iron Mountain
Behr Iron Mountain is a deep, low-reflectance shade, neutral in character with an LRV of 18. 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 20 and 18, the two reflect almost the same amount of light. At ΔE 0.8 you'd need them side by side to tell them apart.
With LRVs of 18 and 17, the two reflect almost the same amount of light. At ΔE 1.3 you'd need them side by side to tell them apart.
With LRVs of 19 and 18, the two reflect almost the same amount of light. At ΔE 1.6 you'd need them side by side to tell them apart.
With LRVs of 19 and 18, the two reflect almost the same amount of light. At ΔE 1.7 you'd need them side by side to tell them apart.
With LRVs of 20 and 18, the two reflect almost the same amount of light. At ΔE 2.0 you'd need them side by side to tell them apart.
Their light reflectance is nearly identical (LRV 20 vs 18), so neither reads brighter in a room. A ΔE of 2.1 means the difference barely reads in a finished room.
With LRVs of 20 and 18, the two reflect almost the same amount of light. At ΔE 2.1 you'd need them side by side to tell them apart.
Dusty grey reads slightly lighter (LRV 23 vs 18), a gap that shows most in low-lit rooms. At ΔE 2.3 you'd need them side by side to tell them apart.
With LRVs of 19 and 18, the two reflect almost the same amount of light. At ΔE 2.4 you'd need them side by side to tell them apart.
With LRVs of 18 and 16, the two reflect almost the same amount of light. At ΔE 2.5 you'd need them side by side to tell them apart.
Their light reflectance is nearly identical (LRV 20 vs 18), so neither reads brighter in a room. The ΔE 3.7 gap is real but not dramatic — distinct as a choice, harmonious together.
Their light reflectance is nearly identical (LRV 18 vs 15), so neither reads brighter in a room. The ΔE 4.7 gap is real but not dramatic — distinct as a choice, harmonious together.
Iron Mountain reads slightly lighter (LRV 18 vs 15), a gap that shows most in low-lit rooms. At ΔE 5.0 they're clearly different, yet close enough to share a room.
Iron Mountain reads slightly lighter (LRV 18 vs 13), a gap that shows most in low-lit rooms. At ΔE 6.7 they're clearly different, yet close enough to share a room.