Match Halcyon Green
Sherwin-Williams Halcyon Green is a mid-tone shade, cool in character with an LRV of 38. The matches below are the closest equivalents available across every brand on Pontata, ranked by ΔE — a perceptual color difference score. A ΔE under 3 is subtle; under 10 is noticeable but harmonious; above 25 means genuinely different colors.
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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 40 vs 38), so neither reads brighter in a room. A ΔE of 1.2 means the difference barely reads in a finished room.
Their light reflectance is nearly identical (LRV 38 vs 38), so neither reads brighter in a room. A ΔE of 1.6 means the difference barely reads in a finished room.
Their light reflectance is nearly identical (LRV 40 vs 38), so neither reads brighter in a room. A ΔE of 1.8 means the difference barely reads in a finished room.
With LRVs of 38 and 36, the two reflect almost the same amount of light. At ΔE 2.2 you'd need them side by side to tell them apart.
Their light reflectance is nearly identical (LRV 38 vs 36), so neither reads brighter in a room. A ΔE of 2.3 means the difference barely reads in a finished room.
Their light reflectance is nearly identical (LRV 39 vs 38), so neither reads brighter in a room. A ΔE of 2.7 means the difference barely reads in a finished room.
With LRVs of 41 and 38, the two reflect almost the same amount of light. At ΔE 2.9 you'd need them side by side to tell them apart.
A 4-point LRV gap (38 vs 34) makes Halcyon Green the marginally brighter of the two. A ΔE of 3.0 means the difference barely reads in a finished room.
With LRVs of 40 and 38, the two reflect almost the same amount of light. At ΔE 3.0 they're clearly different, yet close enough to share a room.
With LRVs of 41 and 38, the two reflect almost the same amount of light. At ΔE 3.7 they're clearly different, yet close enough to share a room.
With LRVs of 41 and 38, the two reflect almost the same amount of light. At ΔE 4.1 they're clearly different, yet close enough to share a room.
Celestial Blue reads slightly lighter (LRV 44 vs 38), a gap that shows most in low-lit rooms. At ΔE 4.2 they're clearly different, yet close enough to share a room.
With LRVs of 38 and 38, the two reflect almost the same amount of light. At ΔE 5.2 they're clearly different, yet close enough to share a room.
A 7-point LRV gap (45 vs 38) makes Agate Grey the marginally brighter of the two. The ΔE 6.4 gap is real but not dramatic — distinct as a choice, harmonious together.