Underwater vs Nocturnal Gray
Underwater is a Behr color while Nocturnal Gray comes from Benjamin Moore. These are both blue-greys, so the question isn't which hue to choose — it's where within blue-grey to land. At LRV 14 vs 11, Nocturnal Gray will read as the brighter of the two — a 3-point gap that matters most in north-facing or low-light rooms. They share a blue quality — useful to know if you're layering them in the same space. At ΔE 4.1, the difference is perceptible but not dramatic — the two can work harmoniously in the same space. Below you'll find 3 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Underwater vs Nocturnal Gray in Real Spaces
3 real rooms side by side. Underwater and Nocturnal Gray are close enough that the difference can be hard to judge from a chip alone — these photos show how each reads at scale, across different spaces and lighting conditions.
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. Nocturnal Gray has the edge in reflectance, which shows as a quiet sense of added space rather than an obvious contrast.
Front Door
Front doors are seen in isolation against the rest of the facade, which makes them a high-stakes surface where even subtle differences matter. Nocturnal Gray has the edge in reflectance, which shows as a quiet sense of added space rather than an obvious contrast.
Kitchen Cabinets
On cabinetry, undertone and temperature become more pronounced against countertops and hardware. The brightness difference is modest but present — Nocturnal Gray gives the walls a little more lift.
Color Details
Underwater vs Nocturnal Gray Simulated Comparison
5 simulated room previews — drag the slider on each to see Underwater on one side and Nocturnal 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 Underwater comparisons
See how Underwater stacks up against other well-photographed colors across different brands and tones.
