Cos Cob Stonewall vs Willowleaf
Cos Cob Stonewall (Benjamin Moore) and Willowleaf (Sherwin-Williams) come from different manufacturers. These are both greys, so the question isn't which hue to choose — it's where within grey to land. Their light reflectance values are nearly the same — 26 vs 24 — so neither will read significantly brighter or darker than the other. Where Cos Cob Stonewall leans green, Willowleaf reads neutral — a distinction that shifts noticeably depending on the light source and surrounding finishes. A ΔE of 2.6 puts them in subtle territory — distinguishable in direct comparison, less so from across a room. Below, 5 simulated room previews show how each color reads at scale — real-room photos will be added as they become available.
Color Details
Cos Cob Stonewall vs Willowleaf Simulated Comparison
5 simulated room previews — drag the slider on each to see Cos Cob Stonewall on one side and Willowleaf on the other.
Digital color is approximate. These simulations are generated from the manufacturer's hex values and overlaid on grayscale room photos — your screen's calibration, brightness, and viewing angle all affect how they render. Before committing to either color, test physical samples in your own space under the light you actually live with.
More Cos Cob Stonewall comparisons
See how Cos Cob Stonewall stacks up against other well-photographed colors across different brands and tones.
Ammonite reflects far more light (LRV 69 vs 26), opening up a space where Cos Cob Stonewall encloses it.
At LRV 83 vs 26, White Dove is decisively the brighter choice.
At LRV 26 vs 6, Cos Cob Stonewall is decisively the brighter choice.
Purbeck Stone reflects far more light (LRV 52 vs 26), opening up a space where Cos Cob Stonewall encloses it.
Evergreen Fog reads slightly lighter (LRV 30 vs 26), a gap that shows most in low-lit rooms.
At LRV 52 vs 26, Mizzle is decisively the brighter choice.
Agreeable Gray reflects far more light (LRV 60 vs 26), opening up a space where Cos Cob Stonewall encloses it.
At LRV 58 vs 26, Accessible Beige is decisively the brighter choice.
Their light reflectance is nearly identical (LRV 27 vs 26), so neither reads brighter in a room.
French Gray reflects far more light (LRV 43 vs 26), opening up a space where Cos Cob Stonewall encloses it.
Cos Cob Stonewall reflects far more light (LRV 26 vs 4), opening up a space where Naval encloses it.
At LRV 55 vs 26, Tranquil Dawn is decisively the brighter choice.
At LRV 26 vs 13, Cos Cob Stonewall is decisively the brighter choice.
At LRV 44 vs 26, Hardwick White is decisively the brighter choice.
Pure White reflects far more light (LRV 84 vs 26), opening up a space where Cos Cob Stonewall encloses it.
Cos Cob Stonewall reads slightly lighter (LRV 26 vs 21), a gap that shows most in low-lit rooms.
At LRV 66 vs 26, Balboa Mist is decisively the brighter choice.
At LRV 74 vs 26, Shoji White is decisively the brighter choice.
At LRV 83 vs 26, Snowbound is decisively the brighter choice.
Pigeon reflects far more light (LRV 51 vs 26), opening up a space where Cos Cob Stonewall encloses it.
At LRV 26 vs 12, Cos Cob Stonewall is decisively the brighter choice.
At LRV 26 vs 8, Cos Cob Stonewall is decisively the brighter choice.
At LRV 68 vs 26, Skimming Stone is decisively the brighter choice.
Dix Blue reflects far more light (LRV 41 vs 26), opening up a space where Cos Cob Stonewall encloses it.
At LRV 26 vs 12, Cos Cob Stonewall is decisively the brighter choice.
At LRV 45 vs 26, Saybrook Sage is decisively the brighter choice.
Pale Green reads slightly lighter (LRV 31 vs 26), a gap that shows most in low-lit rooms.