Match RAL 660-5
RAL Effect RAL 660-5 is a mid-tone shade with an LRV of 41. 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.
Madison Avenue reads slightly lighter (LRV 47 vs 41), a gap that shows most in low-lit rooms. At ΔE 2.0 you'd need them side by side to tell them apart.
A 10-point LRV gap (51 vs 41) makes Lasting Thoughts the marginally brighter of the two. The ΔE 4.2 gap is real but not dramatic — distinct as a choice, harmonious together.
With LRVs of 41 and 40, the two reflect almost the same amount of light. At ΔE 8.0 they're clearly different, yet close enough to share a room.
With LRVs of 41 and 40, the two reflect almost the same amount of light. At ΔE 10.9 these are two genuinely different directions, not variations on a theme.
A 4-point LRV gap (44 vs 41) makes Light green the marginally brighter of the two. A ΔE of 13.3 puts them firmly in different territory — a strong contrast if combined.
A 9-point LRV gap (49 vs 41) makes Blue Ground the marginally brighter of the two. A ΔE of 15.5 puts them firmly in different territory — a strong contrast if combined.
At LRV 53 vs 41, Dover Surf is decisively the brighter choice. A ΔE of 20.9 puts them firmly in different territory — a strong contrast if combined.
Their light reflectance is nearly identical (LRV 41 vs 40), so neither reads brighter in a room. A ΔE of 23.7 puts them firmly in different territory — a strong contrast if combined.