Match Sky blue
RAL Classic Sky blue is a deep, low-reflectance shade with an LRV of 19. 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 19 vs 18), so neither reads brighter in a room. The ΔE 4.7 gap is real but not dramatic — distinct as a choice, harmonious together.
Their light reflectance is nearly identical (LRV 19 vs 17), so neither reads brighter in a room. The ΔE 5.1 gap is real but not dramatic — distinct as a choice, harmonious together.
Light blue reads slightly lighter (LRV 23 vs 19), a gap that shows most in low-lit rooms. At ΔE 7.0 they're clearly different, yet close enough to share a room.
A 9-point LRV gap (19 vs 10) makes Sky blue the marginally brighter of the two. The ΔE 7.8 gap is real but not dramatic — distinct as a choice, harmonious together.
At LRV 32 vs 19, Delicate Cornflower is decisively the brighter choice. A ΔE of 13.8 puts them firmly in different territory — a strong contrast if combined.
A 11-point LRV gap (30 vs 19) makes St Giles Blue the marginally brighter of the two. A ΔE of 15.9 puts them firmly in different territory — a strong contrast if combined.
Sky blue reads slightly lighter (LRV 19 vs 8), a gap that shows most in low-lit rooms. At ΔE 25.5 these are two genuinely different directions, not variations on a theme.
Sky blue reads slightly lighter (LRV 19 vs 14), a gap that shows most in low-lit rooms. At ΔE 27.5 these are two genuinely different directions, not variations on a theme.
With LRVs of 19 and 19, the two reflect almost the same amount of light. At ΔE 29.6 these are two genuinely different directions, not variations on a theme.