Match Black blue
RAL Classic Black blue is a deep, low-reflectance shade with an LRV of 5. 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 5 and 4, the two reflect almost the same amount of light. At ΔE 3.0 you'd need them side by side to tell them apart.
Deep Breath reads slightly lighter (LRV 9 vs 5), a gap that shows most in low-lit rooms. At ΔE 5.2 they're clearly different, yet close enough to share a room.
With LRVs of 5 and 2, the two reflect almost the same amount of light. At ΔE 5.3 they're clearly different, yet close enough to share a room.
Their light reflectance is nearly identical (LRV 5 vs 5), so neither reads brighter in a room. The ΔE 7.4 gap is real but not dramatic — distinct as a choice, harmonious together.
With LRVs of 5 and 3, the two reflect almost the same amount of light. At ΔE 8.8 they're clearly different, yet close enough to share a room.
With LRVs of 5 and 5, the two reflect almost the same amount of light. At ΔE 9.6 they're clearly different, yet close enough to share a room.
Their light reflectance is nearly identical (LRV 5 vs 5), so neither reads brighter in a room. A ΔE of 10.0 puts them firmly in different territory — a strong contrast if combined.
With LRVs of 5 and 3, the two reflect almost the same amount of light. At ΔE 11.4 these are two genuinely different directions, not variations on a theme.
With LRVs of 5 and 5, the two reflect almost the same amount of light. At ΔE 15.4 these are two genuinely different directions, not variations on a theme.
With LRVs of 5 and 5, the two reflect almost the same amount of light. At ΔE 16.3 these are two genuinely different directions, not variations on a theme.
With LRVs of 6 and 5, the two reflect almost the same amount of light. At ΔE 17.2 these are two genuinely different directions, not variations on a theme.
Their light reflectance is nearly identical (LRV 5 vs 5), so neither reads brighter in a room. A ΔE of 17.9 puts them firmly in different territory — a strong contrast if combined.
Their light reflectance is nearly identical (LRV 7 vs 5), so neither reads brighter in a room. A ΔE of 21.4 puts them firmly in different territory — a strong contrast if combined.