Match RAL 660-M
RAL Effect RAL 660-M is a deep, low-reflectance shade with an LRV of 24. 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.
Blue Toile reads slightly lighter (LRV 29 vs 24), a gap that shows most in low-lit rooms. At ΔE 0.8 you'd need them side by side to tell them apart.
Their light reflectance is nearly identical (LRV 26 vs 24), so neither reads brighter in a room. The ΔE 3.2 gap is real but not dramatic — distinct as a choice, harmonious together.
Their light reflectance is nearly identical (LRV 26 vs 24), so neither reads brighter in a room. The ΔE 4.5 gap is real but not dramatic — distinct as a choice, harmonious together.
A 4-point LRV gap (28 vs 24) makes Stonewashed Blue the marginally brighter of the two. The ΔE 5.6 gap is real but not dramatic — distinct as a choice, harmonious together.
Blue Verditer reads slightly lighter (LRV 29 vs 24), a gap that shows most in low-lit rooms. At ΔE 5.6 they're clearly different, yet close enough to share a room.
A 5-point LRV gap (29 vs 24) makes Pastel blue the marginally brighter of the two. The ΔE 6.3 gap is real but not dramatic — distinct as a choice, harmonious together.
A 6-point LRV gap (30 vs 24) makes Blessed Blue the marginally brighter of the two. The ΔE 6.5 gap is real but not dramatic — distinct as a choice, harmonious together.
A 4-point LRV gap (28 vs 24) makes Stone Blue the marginally brighter of the two. A ΔE of 10.9 puts them firmly in different territory — a strong contrast if combined.
Their light reflectance is nearly identical (LRV 26 vs 24), so neither reads brighter in a room. A ΔE of 14.1 puts them firmly in different territory — a strong contrast if combined.
With LRVs of 27 and 24, the two reflect almost the same amount of light. At ΔE 14.6 these are two genuinely different directions, not variations on a theme.
A 4-point LRV gap (28 vs 24) makes S 4010-B70G the marginally brighter of the two. A ΔE of 16.9 puts them firmly in different territory — a strong contrast if combined.