Nocturne Blue vs Agreeable Gray
Nocturne Blue (Behr) and Agreeable Gray (Sherwin-Williams) come from different manufacturers. Hue-wise, Nocturne Blue belongs to the blue family and Agreeable Gray to the greige-grey family. The 54-point LRV gap — 60 for Agreeable Gray vs 7 for Nocturne Blue — means Agreeable Gray will open up a space more effectively. Where Nocturne Blue leans blue, Agreeable Gray reads warm — a distinction that shifts noticeably depending on the light source and surrounding finishes. A ΔE of 53.3 puts these firmly in different territory — two distinct design choices rather than close alternatives. Below you'll find 4 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Nocturne Blue vs Agreeable Gray in Real Spaces
4 real rooms side by side. Seeing Nocturne Blue 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 Nocturne Blue.
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 Nocturne Blue.
Kitchen Cabinets
Cabinet color is always seen in context — against countertops, backsplash, and hardware — which amplifies undertone differences that might disappear on a plain wall. Agreeable Gray returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
Color Details
Nocturne Blue vs Agreeable Gray Simulated Comparison
5 simulated room previews — drag the slider on each to see Nocturne Blue 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 Nocturne Blue comparisons
See how Nocturne Blue stacks up against other well-photographed colors across different brands and tones.
At LRV 83 vs 7, White Dove is decisively the brighter choice.
Ammonite reflects far more light (LRV 69 vs 7), opening up a space where Nocturne Blue encloses it.
Their light reflectance is nearly identical (LRV 7 vs 6), so neither reads brighter in a room.
Purbeck Stone reflects far more light (LRV 52 vs 7), opening up a space where Nocturne Blue encloses it.
Evergreen Fog reflects far more light (LRV 30 vs 7), opening up a space where Nocturne Blue encloses it.
At LRV 52 vs 7, Mizzle is decisively the brighter choice.
At LRV 58 vs 7, Accessible Beige is decisively the brighter choice.
At LRV 27 vs 7, Denim Drift is decisively the brighter choice.
French Gray reflects far more light (LRV 43 vs 7), opening up a space where Nocturne Blue encloses it.
With LRVs of 7 and 4, the two reflect almost the same amount of light.
At LRV 55 vs 7, Tranquil Dawn is decisively the brighter choice.
A 7-point LRV gap (13 vs 7) makes Bancha the marginally brighter of the two.
At LRV 44 vs 7, Hardwick White is decisively the brighter choice.
Pure White reflects far more light (LRV 84 vs 7), opening up a space where Nocturne Blue encloses it.
Artichoke reflects far more light (LRV 21 vs 7), opening up a space where Nocturne Blue encloses it.
At LRV 66 vs 7, Balboa Mist is decisively the brighter choice.
At LRV 74 vs 7, Shoji White is decisively the brighter choice.
At LRV 83 vs 7, Snowbound is decisively the brighter choice.
A 5-point LRV gap (12 vs 7) makes Pewter Green the marginally brighter of the two.
At LRV 68 vs 7, Skimming Stone is decisively the brighter choice.
Dix Blue reflects far more light (LRV 41 vs 7), opening up a space where Nocturne Blue encloses it.
Calamine reflects far more light (LRV 68 vs 7), opening up a space where Nocturne Blue encloses it.
Treron reflects far more light (LRV 25 vs 7), opening up a space where Nocturne Blue encloses it.
A 5-point LRV gap (12 vs 7) makes Vintage Vogue the marginally brighter of the two.
At LRV 45 vs 7, Saybrook Sage is decisively the brighter choice.
Pale Green reflects far more light (LRV 31 vs 7), opening up a space where Nocturne Blue encloses it.
With LRVs of 7 and 7, the two reflect almost the same amount of light.
Cement grey reflects far more light (LRV 24 vs 7), opening up a space where Nocturne Blue encloses it.
Guilford Green reflects far more light (LRV 57 vs 7), opening up a space where Nocturne Blue encloses it.
Just Walnut reflects far more light (LRV 72 vs 7), opening up a space where Nocturne Blue encloses it.