Match Blue Promise
PPG Blue Promise is a mid-tone shade with an LRV of 33. 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.
With LRVs of 33 and 31, the two reflect almost the same amount of light. At ΔE 1.4 you'd need them side by side to tell them apart.
A 3-point LRV gap (33 vs 30) makes Blue Promise the marginally brighter of the two. A ΔE of 2.1 means the difference barely reads in a finished room.
A 6-point LRV gap (33 vs 27) makes Blue Promise the marginally brighter of the two. A ΔE of 2.8 means the difference barely reads in a finished room.
With LRVs of 34 and 33, the two reflect almost the same amount of light. At ΔE 3.2 they're clearly different, yet close enough to share a room.
A 8-point LRV gap (33 vs 25) makes Blue Promise the marginally brighter of the two. The ΔE 4.6 gap is real but not dramatic — distinct as a choice, harmonious together.
With LRVs of 33 and 32, the two reflect almost the same amount of light. At ΔE 4.8 they're clearly different, yet close enough to share a room.
Nova Scotia Blue reads slightly lighter (LRV 36 vs 33), a gap that shows most in low-lit rooms. At ΔE 5.3 they're clearly different, yet close enough to share a room.
With LRVs of 33 and 32, the two reflect almost the same amount of light. At ΔE 7.5 they're clearly different, yet close enough to share a room.
A 9-point LRV gap (33 vs 24) makes Blue Promise the marginally brighter of the two. The ΔE 9.2 gap is real but not dramatic — distinct as a choice, harmonious together.
A 4-point LRV gap (33 vs 29) makes Blue Promise the marginally brighter of the two. The ΔE 9.2 gap is real but not dramatic — distinct as a choice, harmonious together.
Blue Promise reflects far more light (LRV 33 vs 18), opening up a space where K431 encloses it. At ΔE 13.4 these are two genuinely different directions, not variations on a theme.
With LRVs of 36 and 33, the two reflect almost the same amount of light. At ΔE 17.4 these are two genuinely different directions, not variations on a theme.
Gustavian Blue reads slightly lighter (LRV 38 vs 33), a gap that shows most in low-lit rooms. At ΔE 19.1 these are two genuinely different directions, not variations on a theme.
Driftwood Blues reflects far more light (LRV 46 vs 33), opening up a space where Blue Promise encloses it. At ΔE 21.6 these are two genuinely different directions, not variations on a theme.