Guilford Green vs Copen Blue
Guilford Green is a Benjamin Moore color while Copen Blue comes from Sherwin-Williams. Hue-wise, Guilford Green belongs to the beige-green family and Copen Blue to the blue-green family. With LRVs of 57 and 59, they'll behave almost identically in terms of how much light they reflect back into a room. The tonal difference — Guilford Green's yellow character against Copen Blue's cool — becomes most visible against white trim or in morning light. At ΔE 12.5, these are genuinely distinct colors — a strong contrast if used together, or a meaningful choice between two different directions. Below you'll find 5 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Guilford Green vs Copen Blue in Real Spaces
5 real rooms side by side. Seeing Guilford Green and Copen Blue in actual rooms makes the difference concrete; browse the spaces below to get a feel for how each color lives on a wall.
Living Room
Living rooms test a color across a full range of conditions — morning sun, afternoon shade, and evening lamp light all shift how both of these read. Copen Blue reads more restrained here, while Guilford Green adds a sense of enclosure and warmth.
Bedroom
Bedroom walls are often seen under warm artificial light, a context that shifts both colors from how they look on a chip. The temperature contrast between Guilford Green and Copen Blue is what sets these apart most in this context.
Bathroom
Bathrooms amplify color — the enclosed space and reflective surfaces make what reads subtle elsewhere feel more present here. The temperature contrast between Guilford Green and Copen Blue is what sets these apart most in this context.
House
At full exterior scale, the difference between these two colors becomes much easier to judge than from a small chip. The temperature contrast between Guilford Green and Copen Blue is what sets these apart most in this context.
Kitchen Cabinets
On cabinetry, undertone and temperature become more pronounced against countertops and hardware. The temperature contrast between Guilford Green and Copen Blue is what sets these apart most in this context.
Color Details
Guilford Green vs Copen Blue Simulated Comparison
5 simulated room previews — drag the slider on each to see Guilford Green on one side and Copen 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 Guilford Green comparisons
See how Guilford Green stacks up against other well-photographed colors across different brands and tones.
At LRV 83 vs 57, White Dove is decisively the brighter choice.
Ammonite reads slightly lighter (LRV 69 vs 57), a gap that shows most in low-lit rooms.
At LRV 57 vs 6, Guilford Green is decisively the brighter choice.
Guilford Green reads slightly lighter (LRV 57 vs 52), a gap that shows most in low-lit rooms.
Guilford Green reflects far more light (LRV 57 vs 30), opening up a space where Evergreen Fog encloses it.
A 6-point LRV gap (57 vs 52) makes Guilford Green the marginally brighter of the two.
Agreeable Gray reads slightly lighter (LRV 60 vs 57), a gap that shows most in low-lit rooms.
Their light reflectance is nearly identical (LRV 58 vs 57), so neither reads brighter in a room.
At LRV 57 vs 27, Guilford Green is decisively the brighter choice.
Guilford Green reflects far more light (LRV 57 vs 43), opening up a space where French Gray encloses it.
Guilford Green reflects far more light (LRV 57 vs 4), opening up a space where Naval encloses it.
Their light reflectance is nearly identical (LRV 57 vs 55), so neither reads brighter in a room.
At LRV 57 vs 13, Guilford Green is decisively the brighter choice.
At LRV 57 vs 44, Guilford Green is decisively the brighter choice.
Pure White reflects far more light (LRV 84 vs 57), opening up a space where Guilford Green encloses it.
Guilford Green reflects far more light (LRV 57 vs 21), opening up a space where Artichoke encloses it.
A 8-point LRV gap (66 vs 57) makes Balboa Mist the marginally brighter of the two.
At LRV 74 vs 57, Shoji White is decisively the brighter choice.
At LRV 83 vs 57, Snowbound is decisively the brighter choice.
At LRV 57 vs 12, Guilford Green is decisively the brighter choice.
A 11-point LRV gap (68 vs 57) makes Skimming Stone the marginally brighter of the two.
Guilford Green reflects far more light (LRV 57 vs 41), opening up a space where Dix Blue encloses it.
Calamine reads slightly lighter (LRV 68 vs 57), a gap that shows most in low-lit rooms.
Guilford Green reflects far more light (LRV 57 vs 25), opening up a space where Treron encloses it.
At LRV 57 vs 12, Guilford Green is decisively the brighter choice.
A 12-point LRV gap (57 vs 45) makes Guilford Green the marginally brighter of the two.
Guilford Green reflects far more light (LRV 57 vs 31), opening up a space where Pale Green encloses it.
Guilford Green reflects far more light (LRV 57 vs 7), opening up a space where Pine Needle encloses it.
Guilford Green reflects far more light (LRV 57 vs 24), opening up a space where Cement grey encloses it.
Just Walnut reflects far more light (LRV 72 vs 57), opening up a space where Guilford Green encloses it.