Undersea vs Purbeck Stone
Where Undersea belongs to Behr's range, Purbeck Stone is a Farrow & Ball color. Hue-wise, Undersea belongs to the blue-grey family and Purbeck Stone to the greige-grey family. Purbeck Stone (LRV 52) reflects noticeably more light than Undersea (LRV 9), a difference of 43 points that becomes especially apparent in rooms with limited natural light. Undersea runs blue while Purbeck Stone is decidedly warm, which means they'll respond very differently to warm vs cool light sources. With a ΔE of 42.5, 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 2 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Undersea vs Purbeck Stone in Real Spaces
2 real rooms side by side. Seeing Undersea and Purbeck Stone 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 Purbeck Stone will make the room feel meaningfully brighter than Undersea 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. Purbeck Stone reflects noticeably more light off the walls, making the space read more open than Undersea.
Color Details
Undersea vs Purbeck Stone Simulated Comparison
5 simulated room previews — drag the slider on each to see Undersea on one side and Purbeck Stone 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.
Evergreen Fog reflects far more light (LRV 30 vs 9), opening up a space where Undersea encloses it.
Agreeable Gray reflects far more light (LRV 60 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.