Match RAL 640-M
RAL Effect RAL 640-M 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.
Their light reflectance is nearly identical (LRV 8 vs 5), so neither reads brighter in a room. A ΔE of 1.8 means the difference barely reads in a finished room.
Dark Royal Blue reads slightly lighter (LRV 9 vs 5), a gap that shows most in low-lit rooms. At ΔE 3.1 they're clearly different, yet close enough to share a room.
With LRVs of 8 and 5, the two reflect almost the same amount of light. At ΔE 3.5 they're clearly different, yet close enough to share a room.
A 5-point LRV gap (10 vs 5) makes Signal blue the marginally brighter of the two. The ΔE 4.5 gap is real but not dramatic — distinct as a choice, harmonious together.
Cobalt Embrace reads slightly lighter (LRV 9 vs 5), a gap that shows most in low-lit rooms. At ΔE 4.5 they're clearly different, yet close enough to share a room.
With LRVs of 8 and 5, the two reflect almost the same amount of light. At ΔE 4.8 they're clearly different, yet close enough to share a room.
Their light reflectance is nearly identical (LRV 8 vs 5), so neither reads brighter in a room. A ΔE of 21.3 puts them firmly in different territory — a strong contrast if combined.
Pitch Blue reads slightly lighter (LRV 15 vs 5), a gap that shows most in low-lit rooms. At ΔE 22.3 these are two genuinely different directions, not variations on a theme.
Their light reflectance is nearly identical (LRV 5 vs 4), so neither reads brighter in a room. A ΔE of 24.6 puts them firmly in different territory — a strong contrast if combined.
