Undersea vs Agreeable Gray
Undersea (Behr) and Agreeable Gray (Sherwin-Williams) come from different manufacturers. Undersea reads as blue-grey, while Agreeable Gray reads as greige-grey — two distinct hue families, not close cousins. The 51-point LRV gap — 60 for Agreeable Gray vs 9 for Undersea — means Agreeable Gray will open up a space more effectively. Where Undersea leans blue, Agreeable Gray reads warm — a distinction that shifts noticeably depending on the light source and surrounding finishes. A ΔE of 47.0 puts these firmly in different territory — two distinct design choices rather than close alternatives. Below you'll find 3 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Undersea vs Agreeable Gray in Real Spaces
3 real rooms side by side. Seeing Undersea 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.
Living Room
A living room wall sees more varied light than almost any other surface in the house, which makes the choice between these two more nuanced than a chip suggests. Agreeable Gray reflects noticeably more light off the walls, making the space read more open than Undersea.
Bedroom
Bedrooms are typically lit with warmer, lower light than the rest of the house — a condition that flatters warm tones and deepens cool ones. Agreeable Gray returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
Front Door
On a front door, the color is both the first and last thing you see — a context where even a modest tonal difference reads clearly. Agreeable Gray reflects noticeably more light off the walls, making the space read more open than Undersea.
Color Details
Undersea vs Agreeable Gray Simulated Comparison
5 simulated room previews — drag the slider on each to see Undersea 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 Undersea comparisons
See how Undersea stacks up against other well-photographed colors across different brands and tones.
At LRV 83 vs 9, White Dove is decisively the brighter choice.
Purbeck Stone reflects far more light (LRV 52 vs 9), opening up a space where Undersea encloses it.
Evergreen Fog reflects far more light (LRV 30 vs 9), opening up a space where Undersea encloses it.
At LRV 58 vs 9, Accessible Beige is decisively the brighter choice.
At LRV 27 vs 9, Denim Drift is decisively the brighter choice.
French Gray reflects far more light (LRV 43 vs 9), opening up a space where Undersea encloses it.
At LRV 55 vs 9, Tranquil Dawn is decisively the brighter choice.
At LRV 44 vs 9, Hardwick White is decisively the brighter choice.
Pure White reflects far more light (LRV 84 vs 9), opening up a space where Undersea encloses it.
At LRV 66 vs 9, Balboa Mist is decisively the brighter choice.
At LRV 74 vs 9, Shoji White is decisively the brighter choice.
Their light reflectance is nearly identical (LRV 12 vs 9), so neither reads brighter in a room.
At LRV 68 vs 9, Skimming Stone is decisively the brighter choice.
Their light reflectance is nearly identical (LRV 12 vs 9), so neither reads brighter in a room.
At LRV 45 vs 9, Saybrook Sage is decisively the brighter choice.
Pale Green reflects far more light (LRV 31 vs 9), opening up a space where Undersea encloses it.
With LRVs of 9 and 7, the two reflect almost the same amount of light.
Cement grey reflects far more light (LRV 24 vs 9), opening up a space where Undersea encloses it.
Guilford Green reflects far more light (LRV 57 vs 9), opening up a space where Undersea encloses it.
Just Walnut reflects far more light (LRV 72 vs 9), opening up a space where Undersea encloses it.