Match Shamrock
Sherwin-Williams Shamrock is a deep, low-reflectance shade, cool in character with an LRV of 6. 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.
Shamrock reflects far more light (LRV NaN vs NaN), opening up a space where Perennial Green encloses it. At ΔE 1.6 you'd need them side by side to tell them apart.
Buffett Green reads slightly lighter (LRV 11 vs 6), a gap that shows most in low-lit rooms. At ΔE 5.1 they're clearly different, yet close enough to share a room.
A 4-point LRV gap (11 vs 6) makes Pearl green the marginally brighter of the two. The ΔE 7.4 gap is real but not dramatic — distinct as a choice, harmonious together.
With LRVs of 8 and 6, the two reflect almost the same amount of light. At ΔE 8.1 they're clearly different, yet close enough to share a room.
With LRVs of 9 and 6, the two reflect almost the same amount of light. At ΔE 8.9 they're clearly different, yet close enough to share a room.
A 4-point LRV gap (11 vs 6) makes Perennial Green the marginally brighter of the two. A ΔE of 12.4 puts them firmly in different territory — a strong contrast if combined.
Their light reflectance is nearly identical (LRV 8 vs 6), so neither reads brighter in a room. A ΔE of 13.7 puts them firmly in different territory — a strong contrast if combined.
Their light reflectance is nearly identical (LRV 6 vs 5), so neither reads brighter in a room. A ΔE of 16.6 puts them firmly in different territory — a strong contrast if combined.
A 6-point LRV gap (13 vs 6) makes Organic Green the marginally brighter of the two. A ΔE of 24.3 puts them firmly in different territory — a strong contrast if combined.