Blue Square vs Guilford Green
Where Blue Square belongs to Behr's range, Guilford Green is a Benjamin Moore color. Hue-wise, Blue Square belongs to the blue family and Guilford Green to the beige-green family. Guilford Green (LRV 57) reflects noticeably more light than Blue Square (LRV 20), a difference of 37 points that becomes especially apparent in rooms with limited natural light. Blue Square runs blue while Guilford Green is decidedly yellow, which means they'll respond very differently to warm vs cool light sources. With a ΔE of 41.2, the contrast is hard to miss. These aren't variations on a theme — they're two different answers to the same question. Below you'll find 6 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Blue Square vs Guilford Green in Real Spaces
6 real rooms side by side. Seeing Blue Square and Guilford Green 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
In a living room, color works across both daylight and evening light — the same wall can read very differently at noon and at 8pm. The LRV gap is large enough that Guilford Green will make the room feel meaningfully brighter than Blue Square would.
Bedroom
The context that matters most in a bedroom is how a color reads under a bedside lamp at night, not under noon daylight. Guilford Green reflects noticeably more light off the walls, making the space read more open than Blue Square.
Kitchen
In a kitchen, colors are seen under bright task lighting that amplifies undertones — what reads neutral elsewhere can show its hand here. Guilford Green reflects noticeably more light off the walls, making the space read more open than Blue Square.
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. Guilford Green reflects noticeably more light off the walls, making the space read more open than Blue Square.
House
Seen across an entire facade, subtle tonal differences become pronounced. What reads as nearly the same on a chip often reads as clearly different at scale. Guilford Green reflects noticeably more light off the walls, making the space read more open than Blue Square.
Kitchen Cabinets
Kitchen cabinets are constantly compared against adjacent materials, which means subtle differences between these two become much more visible. Guilford Green reflects noticeably more light off the walls, making the space read more open than Blue Square.
Color Details
Blue Square vs Guilford Green Simulated Comparison
5 simulated room previews — drag the slider on each to see Blue Square on one side and Guilford Green 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 Blue Square comparisons
See how Blue Square stacks up against other well-photographed colors across different brands and tones.
White Dove reflects far more light (LRV 83 vs 20), opening up a space where Blue Square encloses it.
At LRV 69 vs 20, Ammonite is decisively the brighter choice.
Blue Square reflects far more light (LRV 20 vs 6), opening up a space where Iron Ore encloses it.
At LRV 52 vs 20, Purbeck Stone is decisively the brighter choice.
A 11-point LRV gap (30 vs 20) makes Evergreen Fog the marginally brighter of the two.
Mizzle reflects far more light (LRV 52 vs 20), opening up a space where Blue Square encloses it.
At LRV 60 vs 20, Agreeable Gray is decisively the brighter choice.
Accessible Beige reflects far more light (LRV 58 vs 20), opening up a space where Blue Square encloses it.
Denim Drift reads slightly lighter (LRV 27 vs 20), a gap that shows most in low-lit rooms.
At LRV 43 vs 20, French Gray is decisively the brighter choice.
At LRV 20 vs 4, Blue Square is decisively the brighter choice.
Tranquil Dawn reflects far more light (LRV 55 vs 20), opening up a space where Blue Square encloses it.
Blue Square reads slightly lighter (LRV 20 vs 13), a gap that shows most in low-lit rooms.
Hardwick White reflects far more light (LRV 44 vs 20), opening up a space where Blue Square encloses it.
At LRV 84 vs 20, Pure White is decisively the brighter choice.
Their light reflectance is nearly identical (LRV 21 vs 20), so neither reads brighter in a room.
Balboa Mist reflects far more light (LRV 66 vs 20), opening up a space where Blue Square encloses it.
Shoji White reflects far more light (LRV 74 vs 20), opening up a space where Blue Square encloses it.
Snowbound reflects far more light (LRV 83 vs 20), opening up a space where Blue Square encloses it.
Blue Square reads slightly lighter (LRV 20 vs 12), a gap that shows most in low-lit rooms.
Skimming Stone reflects far more light (LRV 68 vs 20), opening up a space where Blue Square encloses it.
At LRV 41 vs 20, Dix Blue is decisively the brighter choice.
At LRV 68 vs 20, Calamine is decisively the brighter choice.
A 5-point LRV gap (25 vs 20) makes Treron the marginally brighter of the two.
Blue Square reads slightly lighter (LRV 20 vs 12), a gap that shows most in low-lit rooms.
Saybrook Sage reflects far more light (LRV 45 vs 20), opening up a space where Blue Square encloses it.
A 11-point LRV gap (31 vs 20) makes Pale Green the marginally brighter of the two.
At LRV 20 vs 7, Blue Square is decisively the brighter choice.
A 4-point LRV gap (24 vs 20) makes Cement grey the marginally brighter of the two.
At LRV 72 vs 20, Just Walnut is decisively the brighter choice.