Yarmouth Blue vs Sleepy Blue
Where Yarmouth Blue belongs to Benjamin Moore's range, Sleepy Blue is a Sherwin-Williams color. Both sit in the blue family, which is useful context if you're narrowing within a single hue direction. They have nearly identical light reflectance values (56 vs 58), so they'll read as similarly Medium in most lighting conditions. Yarmouth Blue runs blue while Sleepy Blue is decidedly cool, which means they'll respond very differently to warm vs cool light sources. At ΔE 2.3, these are close — the kind of difference that matters when choosing between them, but doesn't read strongly in a finished room. Below you'll find 1 real-room photo comparison where both colors appear side by side, plus 5 simulated room previews.
Yarmouth Blue vs Sleepy Blue in Real Spaces
1 real room side by side. Yarmouth Blue and Sleepy Blue are close enough that the difference can be hard to judge from a chip alone — these photos show how each reads at scale, across different spaces and lighting conditions.
Bathroom
Bathrooms are one of the few spaces where you're genuinely enclosed by the paint color, which makes the choice between these two more consequential. At this scale the difference is subtle — you'd need them side by side, as shown here, to reliably tell them apart.
Color Details
Yarmouth Blue vs Sleepy Blue Simulated Comparison
5 simulated room previews — drag the slider on each to see Yarmouth Blue on one side and Sleepy Blue 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 Yarmouth Blue comparisons
See how Yarmouth Blue stacks up against other well-photographed colors across different brands and tones.
Ammonite reflects far more light (LRV 69 vs 56), opening up a space where Yarmouth Blue encloses it.
At LRV 83 vs 56, White Dove is decisively the brighter choice.
At LRV 56 vs 6, Yarmouth Blue is decisively the brighter choice.
Yarmouth Blue reads slightly lighter (LRV 56 vs 52), a gap that shows most in low-lit rooms.
Yarmouth Blue reflects far more light (LRV 56 vs 30), opening up a space where Evergreen Fog encloses it.
A 4-point LRV gap (56 vs 52) makes Yarmouth Blue the marginally brighter of the two.
Agreeable Gray reads slightly lighter (LRV 60 vs 56), a gap that shows most in low-lit rooms.
Their light reflectance is nearly identical (LRV 58 vs 56), so neither reads brighter in a room.
At LRV 56 vs 27, Yarmouth Blue is decisively the brighter choice.
Yarmouth Blue reflects far more light (LRV 56 vs 43), opening up a space where French Gray encloses it.
Yarmouth Blue reflects far more light (LRV 56 vs 4), opening up a space where Naval encloses it.
Their light reflectance is nearly identical (LRV 56 vs 55), so neither reads brighter in a room.
At LRV 56 vs 13, Yarmouth Blue is decisively the brighter choice.
At LRV 56 vs 44, Yarmouth Blue is decisively the brighter choice.
Pure White reflects far more light (LRV 84 vs 56), opening up a space where Yarmouth Blue encloses it.
Yarmouth Blue reflects far more light (LRV 56 vs 21), opening up a space where Artichoke encloses it.
A 10-point LRV gap (66 vs 56) makes Balboa Mist the marginally brighter of the two.
At LRV 74 vs 56, Shoji White is decisively the brighter choice.
At LRV 83 vs 56, Snowbound is decisively the brighter choice.
Yarmouth Blue reads slightly lighter (LRV 56 vs 51), a gap that shows most in low-lit rooms.
At LRV 56 vs 12, Yarmouth Blue is decisively the brighter choice.
At LRV 56 vs 8, Yarmouth Blue is decisively the brighter choice.
At LRV 68 vs 56, Skimming Stone is decisively the brighter choice.
Yarmouth Blue reflects far more light (LRV 56 vs 41), opening up a space where Dix Blue encloses it.
At LRV 56 vs 12, Yarmouth Blue is decisively the brighter choice.
A 10-point LRV gap (56 vs 45) makes Yarmouth Blue the marginally brighter of the two.
Yarmouth Blue reflects far more light (LRV 56 vs 31), opening up a space where Pale Green encloses it.