Match Thunderbird
PPG Thunderbird is a deep, low-reflectance shade with an LRV of 21. 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 21 and 20, the two reflect almost the same amount of light. At ΔE 0.8 you'd need them side by side to tell them apart.
Their light reflectance is nearly identical (LRV 21 vs 20), so neither reads brighter in a room. A ΔE of 0.9 means the difference barely reads in a finished room.
With LRVs of 21 and 20, the two reflect almost the same amount of light. At ΔE 1.4 you'd need them side by side to tell them apart.
Their light reflectance is nearly identical (LRV 21 vs 20), so neither reads brighter in a room. A ΔE of 1.9 means the difference barely reads in a finished room.
With LRVs of 21 and 20, the two reflect almost the same amount of light. At ΔE 2.5 you'd need them side by side to tell them apart.
Their light reflectance is nearly identical (LRV 21 vs 21), so neither reads brighter in a room. The ΔE 3.1 gap is real but not dramatic — distinct as a choice, harmonious together.
With LRVs of 21 and 18, the two reflect almost the same amount of light. At ΔE 3.8 they're clearly different, yet close enough to share a room.
At LRV 35 vs 21, Pearl beige is decisively the brighter choice. The ΔE 4.0 gap is real but not dramatic — distinct as a choice, harmonious together.
Bastion reads slightly lighter (LRV 25 vs 21), a gap that shows most in low-lit rooms. At ΔE 4.4 they're clearly different, yet close enough to share a room.
Their light reflectance is nearly identical (LRV 21 vs 21), so neither reads brighter in a room. The ΔE 4.6 gap is real but not dramatic — distinct as a choice, harmonious together.
With LRVs of 22 and 21, the two reflect almost the same amount of light. At ΔE 5.0 they're clearly different, yet close enough to share a room.
With LRVs of 21 and 20, the two reflect almost the same amount of light. At ΔE 5.2 they're clearly different, yet close enough to share a room.
Their light reflectance is nearly identical (LRV 21 vs 21), so neither reads brighter in a room. The ΔE 8.5 gap is real but not dramatic — distinct as a choice, harmonious together.
S 4010-Y50R reads slightly lighter (LRV 30 vs 21), a gap that shows most in low-lit rooms. At ΔE 9.7 they're clearly different, yet close enough to share a room.