Match Cobalt blue
RAL Classic Cobalt blue is a deep, low-reflectance shade with an LRV of 6. 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 8 and 6, 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 6 and 4, the two reflect almost the same amount of light. At ΔE 2.1 you'd need them side by side to tell them apart.
With LRVs of 6 and 6, the two reflect almost the same amount of light. At ΔE 4.5 they're clearly different, yet close enough to share a room.
Their light reflectance is nearly identical (LRV 6 vs 5), so neither reads brighter in a room. The ΔE 6.2 gap is real but not dramatic — distinct as a choice, harmonious together.
The ΔE 8.4 gap is real but not dramatic — distinct as a choice, harmonious together.
Their light reflectance is nearly identical (LRV 6 vs 5), so neither reads brighter in a room. The ΔE 9.0 gap is real but not dramatic — distinct as a choice, harmonious together.
With LRVs of 6 and 4, the two reflect almost the same amount of light. At ΔE 10.4 these are two genuinely different directions, not variations on a theme.
With LRVs of 6 and 6, the two reflect almost the same amount of light. At ΔE 10.7 these are two genuinely different directions, not variations on a theme.
Their light reflectance is nearly identical (LRV 8 vs 6), so neither reads brighter in a room. A ΔE of 11.6 puts them firmly in different territory — a strong contrast if combined.
With LRVs of 6 and 6, the two reflect almost the same amount of light. At ΔE 14.0 these are two genuinely different directions, not variations on a theme.
With LRVs of 8 and 6, the two reflect almost the same amount of light. At ΔE 15.5 these are two genuinely different directions, not variations on a theme.
With LRVs of 6 and 4, the two reflect almost the same amount of light. At ΔE 17.9 these are two genuinely different directions, not variations on a theme.
Their light reflectance is nearly identical (LRV 7 vs 6), so neither reads brighter in a room. A ΔE of 21.3 puts them firmly in different territory — a strong contrast if combined.
With LRVs of 6 and 4, the two reflect almost the same amount of light. At ΔE 22.7 these are two genuinely different directions, not variations on a theme.