Match RAL 640-1
RAL Effect RAL 640-1 is a mid-tone shade with an LRV of 26. 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.
Mystic Blue reads slightly lighter (LRV 36 vs 26), a gap that shows most in low-lit rooms. At ΔE 3.5 they're clearly different, yet close enough to share a room.
St Giles Blue reads slightly lighter (LRV 30 vs 26), a gap that shows most in low-lit rooms. At ΔE 3.8 they're clearly different, yet close enough to share a room.
At LRV 38 vs 26, Blue Belle Island is decisively the brighter choice. The ΔE 4.8 gap is real but not dramatic — distinct as a choice, harmonious together.
With LRVs of 26 and 26, the two reflect almost the same amount of light. At ΔE 7.6 they're clearly different, yet close enough to share a room.
A 11-point LRV gap (37 vs 26) makes Acapulco Dive the marginally brighter of the two. The ΔE 8.4 gap is real but not dramatic — distinct as a choice, harmonious together.
Blue Verditer reads slightly lighter (LRV 29 vs 26), a gap that shows most in low-lit rooms. At ΔE 9.6 they're clearly different, yet close enough to share a room.
Delicate Cornflower reads slightly lighter (LRV 32 vs 26), a gap that shows most in low-lit rooms. At ΔE 9.8 they're clearly different, yet close enough to share a room.
Their light reflectance is nearly identical (LRV 29 vs 26), so neither reads brighter in a room. A ΔE of 10.3 puts them firmly in different territory — a strong contrast if combined.
S 3010-R80B reads slightly lighter (LRV 36 vs 26), a gap that shows most in low-lit rooms. At ΔE 24.1 these are two genuinely different directions, not variations on a theme.
With LRVs of 27 and 26, the two reflect almost the same amount of light. At ΔE 24.7 these are two genuinely different directions, not variations on a theme.
Their light reflectance is nearly identical (LRV 26 vs 26), so neither reads brighter in a room. A ΔE of 24.8 puts them firmly in different territory — a strong contrast if combined.