Britannia Blue vs Just Walnut
Britannia Blue (Benjamin Moore) and Just Walnut (Dulux) come from different manufacturers. Britannia Blue reads as blue-grey, while Just Walnut reads as beige-greige — two distinct hue families, not close cousins. The 54-point LRV gap — 72 for Just Walnut vs 18 for Britannia Blue — means Just Walnut will open up a space more effectively. Where Britannia Blue leans blue, Just Walnut reads warm — a distinction that shifts noticeably depending on the light source and surrounding finishes. A ΔE of 41.0 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.
Britannia Blue vs Just Walnut in Real Spaces
3 real rooms side by side. Seeing Britannia Blue and Just Walnut 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. Just Walnut reflects noticeably more light off the walls, making the space read more open than Britannia Blue.
Dining Room
Dining rooms often rely on warm incandescent or candlelight, which flatters warm undertones and mutes cool ones. The LRV gap is large enough that Just Walnut will make the room feel meaningfully brighter than Britannia Blue would.
Bathroom
Small bathrooms intensify color. A shade that seems quiet in a larger room can feel immersive when you're surrounded by it on four walls. Just Walnut returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
Color Details
Britannia Blue vs Just Walnut Simulated Comparison
5 simulated room previews — drag the slider on each to see Britannia Blue on one side and Just Walnut 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 Britannia Blue comparisons
See how Britannia Blue stacks up against other well-photographed colors across different brands and tones.
At LRV 69 vs 18, Ammonite is decisively the brighter choice.
White Dove reflects far more light (LRV 83 vs 18), opening up a space where Britannia Blue encloses it.
Britannia Blue reflects far more light (LRV 18 vs 6), opening up a space where Iron Ore encloses it.
At LRV 52 vs 18, Purbeck Stone is decisively the brighter choice.
At LRV 30 vs 18, Evergreen Fog is decisively the brighter choice.
Mizzle reflects far more light (LRV 52 vs 18), opening up a space where Britannia Blue encloses it.
At LRV 60 vs 18, Agreeable Gray is decisively the brighter choice.
Accessible Beige reflects far more light (LRV 58 vs 18), opening up a space where Britannia Blue encloses it.
Denim Drift reads slightly lighter (LRV 27 vs 18), a gap that shows most in low-lit rooms.
At LRV 43 vs 18, French Gray is decisively the brighter choice.
At LRV 18 vs 4, Britannia Blue is decisively the brighter choice.
Tranquil Dawn reflects far more light (LRV 55 vs 18), opening up a space where Britannia Blue encloses it.
Britannia Blue reads slightly lighter (LRV 18 vs 13), a gap that shows most in low-lit rooms.
Hardwick White reflects far more light (LRV 44 vs 18), opening up a space where Britannia Blue encloses it.
At LRV 84 vs 18, Pure White is decisively the brighter choice.
A 3-point LRV gap (21 vs 18) makes Artichoke the marginally brighter of the two.
Balboa Mist reflects far more light (LRV 66 vs 18), opening up a space where Britannia Blue encloses it.
Shoji White reflects far more light (LRV 74 vs 18), opening up a space where Britannia Blue encloses it.
Snowbound reflects far more light (LRV 83 vs 18), opening up a space where Britannia Blue encloses it.
At LRV 51 vs 18, Pigeon is decisively the brighter choice.
Britannia Blue reads slightly lighter (LRV 18 vs 12), a gap that shows most in low-lit rooms.
Britannia Blue reads slightly lighter (LRV 18 vs 8), a gap that shows most in low-lit rooms.
Skimming Stone reflects far more light (LRV 68 vs 18), opening up a space where Britannia Blue encloses it.
At LRV 41 vs 18, Dix Blue is decisively the brighter choice.
Britannia Blue reads slightly lighter (LRV 18 vs 12), a gap that shows most in low-lit rooms.
Saybrook Sage reflects far more light (LRV 45 vs 18), opening up a space where Britannia Blue encloses it.
At LRV 31 vs 18, Pale Green is decisively the brighter choice.