Cathedral Gray vs Tranquil Dawn
Cathedral Gray (Benjamin Moore) and Tranquil Dawn (Dulux) come from different manufacturers. Cathedral Gray reads as greige-grey, while Tranquil Dawn reads as green-grey — two distinct hue families, not close cousins. The 29-point LRV gap — 55 for Tranquil Dawn vs 26 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. A ΔE of 21.2 puts these firmly in different territory — two distinct design choices rather than close alternatives. Below you'll find 2 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Cathedral Gray vs Tranquil Dawn in Real Spaces
2 real rooms side by side. Seeing Cathedral Gray and Tranquil Dawn 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. 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.
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.
Ammonite reflects far more light (LRV 69 vs 26), opening up a space where Cathedral Gray encloses it.
At LRV 83 vs 26, White Dove is decisively the brighter choice.
At LRV 26 vs 6, Cathedral Gray is decisively the brighter choice.
Purbeck Stone reflects far more light (LRV 52 vs 26), opening up a space where Cathedral Gray encloses it.
Evergreen Fog reads slightly lighter (LRV 30 vs 26), a gap that shows most in low-lit rooms.
At LRV 52 vs 26, Mizzle is decisively the brighter choice.
Agreeable Gray reflects far more light (LRV 60 vs 26), opening up a space where Cathedral Gray encloses it.
At LRV 58 vs 26, Accessible Beige is decisively the brighter choice.
Their light reflectance is nearly identical (LRV 27 vs 26), so neither reads brighter in a room.
French Gray reflects far more light (LRV 43 vs 26), opening up a space where Cathedral Gray encloses it.
Cathedral Gray reflects far more light (LRV 26 vs 4), opening up a space where Naval encloses it.
At LRV 26 vs 13, Cathedral Gray is decisively the brighter choice.
At LRV 44 vs 26, Hardwick White is decisively the brighter choice.
Pure White reflects far more light (LRV 84 vs 26), opening up a space where Cathedral Gray encloses it.
Cathedral Gray reads slightly lighter (LRV 26 vs 21), a gap that shows most in low-lit rooms.
At LRV 66 vs 26, Balboa Mist is decisively the brighter choice.
At LRV 74 vs 26, Shoji White is decisively the brighter choice.
At LRV 83 vs 26, Snowbound is decisively the brighter choice.
Pigeon reflects far more light (LRV 51 vs 26), opening up a space where Cathedral Gray encloses it.
At LRV 26 vs 12, Cathedral Gray is decisively the brighter choice.
At LRV 26 vs 8, Cathedral Gray is decisively the brighter choice.
At LRV 68 vs 26, Skimming Stone is decisively the brighter choice.
Dix Blue reflects far more light (LRV 41 vs 26), opening up a space where Cathedral Gray encloses it.
At LRV 26 vs 12, Cathedral Gray is decisively the brighter choice.
At LRV 45 vs 26, Saybrook Sage is decisively the brighter choice.
Pale Green reads slightly lighter (LRV 31 vs 26), a gap that shows most in low-lit rooms.
Cathedral Gray reflects far more light (LRV 26 vs 7), opening up a space where Pine Needle encloses it.