Hidden Sea Glass vs Agreeable Gray
Where Hidden Sea Glass belongs to Behr's range, Agreeable Gray is a Sherwin-Williams color. Hidden Sea Glass reads as blue, while Agreeable Gray reads as greige-grey — two distinct hue families, not close cousins. Agreeable Gray (LRV 60) reflects noticeably more light than Hidden Sea Glass (LRV 45), a difference of 15 points that becomes especially apparent in rooms with limited natural light. Hidden Sea Glass runs blue while Agreeable Gray is decidedly warm, which means they'll respond very differently to warm vs cool light sources. With a ΔE of 33.1, 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 3 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Hidden Sea Glass vs Agreeable Gray in Real Spaces
3 real rooms side by side. Seeing Hidden Sea Glass and Agreeable Gray in actual rooms makes the difference concrete; browse the spaces below to get a feel for how each color lives on a wall.
Bedroom
The context that matters most in a bedroom is how a color reads under a bedside lamp at night, not under noon daylight. Agreeable Gray reflects noticeably more light off the walls, making the space read more open than Hidden Sea Glass.
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. Agreeable Gray reflects noticeably more light off the walls, making the space read more open than Hidden Sea Glass.
Front Door
A front door is a focal point — small color differences read clearly at this concentrated scale. The LRV gap is large enough that Agreeable Gray will make the room feel meaningfully brighter than Hidden Sea Glass would.
Color Details
Hidden Sea Glass vs Agreeable Gray Simulated Comparison
5 simulated room previews — drag the slider on each to see Hidden Sea Glass on one side and Agreeable Gray 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 Hidden Sea Glass comparisons
See how Hidden Sea Glass stacks up against other well-photographed colors across different brands and tones.
At LRV 83 vs 45, White Dove is decisively the brighter choice.
Ammonite reflects far more light (LRV 69 vs 45), opening up a space where Hidden Sea Glass encloses it.
At LRV 45 vs 6, Hidden Sea Glass is decisively the brighter choice.
Purbeck Stone reads slightly lighter (LRV 52 vs 45), a gap that shows most in low-lit rooms.
Hidden Sea Glass reflects far more light (LRV 45 vs 30), opening up a space where Evergreen Fog encloses it.
A 7-point LRV gap (52 vs 45) makes Mizzle the marginally brighter of the two.
At LRV 58 vs 45, Accessible Beige is decisively the brighter choice.
At LRV 45 vs 27, Hidden Sea Glass is decisively the brighter choice.
With LRVs of 45 and 43, the two reflect almost the same amount of light.
Hidden Sea Glass reflects far more light (LRV 45 vs 4), opening up a space where Naval encloses it.
A 10-point LRV gap (55 vs 45) makes Tranquil Dawn the marginally brighter of the two.
At LRV 45 vs 13, Hidden Sea Glass is decisively the brighter choice.
Their light reflectance is nearly identical (LRV 45 vs 44), so neither reads brighter in a room.
Pure White reflects far more light (LRV 84 vs 45), opening up a space where Hidden Sea Glass encloses it.
Hidden Sea Glass reflects far more light (LRV 45 vs 21), opening up a space where Artichoke encloses it.
At LRV 66 vs 45, Balboa Mist is decisively the brighter choice.
At LRV 74 vs 45, Shoji White is decisively the brighter choice.
At LRV 83 vs 45, Snowbound is decisively the brighter choice.
At LRV 45 vs 12, Hidden Sea Glass is decisively the brighter choice.
At LRV 68 vs 45, Skimming Stone is decisively the brighter choice.
Hidden Sea Glass reads slightly lighter (LRV 45 vs 41), a gap that shows most in low-lit rooms.
Calamine reflects far more light (LRV 68 vs 45), opening up a space where Hidden Sea Glass encloses it.
Hidden Sea Glass reflects far more light (LRV 45 vs 25), opening up a space where Treron encloses it.
At LRV 45 vs 12, Hidden Sea Glass is decisively the brighter choice.
Their light reflectance is nearly identical (LRV 45 vs 45), so neither reads brighter in a room.
Hidden Sea Glass reflects far more light (LRV 45 vs 31), opening up a space where Pale Green encloses it.
Hidden Sea Glass reflects far more light (LRV 45 vs 7), opening up a space where Pine Needle encloses it.
Hidden Sea Glass reflects far more light (LRV 45 vs 24), opening up a space where Cement grey encloses it.
Guilford Green reflects far more light (LRV 57 vs 45), opening up a space where Hidden Sea Glass encloses it.
Just Walnut reflects far more light (LRV 72 vs 45), opening up a space where Hidden Sea Glass encloses it.