Cathedral Gray vs Tranquil Dawn
Cathedral Gray (Behr) and Tranquil Dawn (Dulux) come from different manufacturers. Hue-wise, Cathedral Gray belongs to the grey family and Tranquil Dawn to the green-grey family. The 15-point LRV gap — 55 for Tranquil Dawn vs 40 for Cathedral Gray — means Tranquil Dawn will open up a space more effectively. Where Cathedral Gray leans red, Tranquil Dawn reads neutral — a distinction that shifts noticeably depending on the light source and surrounding finishes. ΔE 9.7 means they're clearly different, but not dramatically so — they'd pair well in the same room. Below you'll find 4 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Cathedral Gray vs Tranquil Dawn in Real Spaces
4 real rooms side by side. Cathedral Gray and Tranquil Dawn 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
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. Tranquil Dawn reflects noticeably more light off the walls, making the space read more open than Cathedral Gray.
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 Tranquil Dawn will make the room feel meaningfully brighter than Cathedral Gray 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. Tranquil Dawn returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
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. Tranquil Dawn returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
Color Details
Cathedral Gray vs Tranquil Dawn Simulated Comparison
5 simulated room previews — drag the slider on each to see Cathedral Gray on one side and Tranquil Dawn 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 Cathedral Gray comparisons
See how Cathedral Gray stacks up against other well-photographed colors across different brands and tones.
White Dove reflects far more light (LRV 83 vs 40), opening up a space where Cathedral Gray encloses it.
At LRV 69 vs 40, Ammonite is decisively the brighter choice.
Cathedral Gray reflects far more light (LRV 40 vs 6), opening up a space where Iron Ore encloses it.
A 11-point LRV gap (52 vs 40) makes Purbeck Stone the marginally brighter of the two.
A 10-point LRV gap (40 vs 30) makes Cathedral Gray the marginally brighter of the two.
Mizzle reads slightly lighter (LRV 52 vs 40), a gap that shows most in low-lit rooms.
At LRV 60 vs 40, Agreeable Gray is decisively the brighter choice.
Accessible Beige reflects far more light (LRV 58 vs 40), opening up a space where Cathedral Gray encloses it.
Cathedral Gray reflects far more light (LRV 40 vs 27), opening up a space where Denim Drift encloses it.
Their light reflectance is nearly identical (LRV 43 vs 40), so neither reads brighter in a room.
At LRV 40 vs 4, Cathedral Gray is decisively the brighter choice.
Cathedral Gray reflects far more light (LRV 40 vs 13), opening up a space where Bancha encloses it.
Hardwick White reads slightly lighter (LRV 44 vs 40), a gap that shows most in low-lit rooms.
At LRV 84 vs 40, Pure White is decisively the brighter choice.
At LRV 40 vs 21, Cathedral Gray is decisively the brighter choice.
Balboa Mist reflects far more light (LRV 66 vs 40), opening up a space where Cathedral Gray encloses it.
Shoji White reflects far more light (LRV 74 vs 40), opening up a space where Cathedral Gray encloses it.
Snowbound reflects far more light (LRV 83 vs 40), opening up a space where Cathedral Gray encloses it.
Cathedral Gray reflects far more light (LRV 40 vs 12), opening up a space where Pewter Green encloses it.
Skimming Stone reflects far more light (LRV 68 vs 40), opening up a space where Cathedral Gray encloses it.
Their light reflectance is nearly identical (LRV 41 vs 40), so neither reads brighter in a room.
At LRV 68 vs 40, Calamine is decisively the brighter choice.
At LRV 40 vs 25, Cathedral Gray is decisively the brighter choice.
Cathedral Gray reflects far more light (LRV 40 vs 12), opening up a space where Vintage Vogue encloses it.
Saybrook Sage reads slightly lighter (LRV 45 vs 40), a gap that shows most in low-lit rooms.
A 9-point LRV gap (40 vs 31) makes Cathedral Gray the marginally brighter of the two.
At LRV 40 vs 7, Cathedral Gray is decisively the brighter choice.
At LRV 40 vs 24, Cathedral Gray is decisively the brighter choice.
At LRV 57 vs 40, Guilford Green is decisively the brighter choice.
At LRV 72 vs 40, Just Walnut is decisively the brighter choice.