Tranquil Dawn vs Austere Gray
Tranquil Dawn (Dulux) and Austere Gray (Sherwin-Williams) come from different manufacturers. Hue-wise, Tranquil Dawn belongs to the green-grey family and Austere Gray to the greige-grey family. The 4-point LRV gap — 55 for Tranquil Dawn vs 51 for Austere Gray — means Tranquil Dawn will open up a space more effectively. Both share a neutral character, which means they'll respond to light and surrounding materials in similar ways. A ΔE of 2.7 puts them in subtle territory — distinguishable in direct comparison, less so from across a room. Below you'll find 5 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Tranquil Dawn vs Austere Gray in Real Spaces
5 real rooms side by side. Tranquil Dawn and Austere 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
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 reads slightly lighter here — a subtle but real difference in how open the space feels.
Kitchen
Kitchens often have the harshest, most revealing light in the house — under-cabinet LEDs and overhead fixtures that strip away subtlety. Tranquil Dawn has the edge in reflectance, which shows as a quiet sense of added space rather than an obvious contrast.
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 has the edge in reflectance, which shows as a quiet sense of added space rather than an obvious contrast.
Mudroom
In a hardworking space like a mudroom, the depth and warmth of a color reads differently than in a quieter room. The brightness difference is modest but present — Tranquil Dawn gives the walls a little more lift.
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 has the edge in reflectance, which shows as a quiet sense of added space rather than an obvious contrast.
Color Details
Tranquil Dawn vs Austere Gray Simulated Comparison
5 simulated room previews — drag the slider on each to see Tranquil Dawn on one side and Austere 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 Tranquil Dawn comparisons
See how Tranquil Dawn stacks up against other well-photographed colors across different brands and tones.
White Dove reflects far more light (LRV 83 vs 55), opening up a space where Tranquil Dawn encloses it.
At LRV 69 vs 55, Ammonite is decisively the brighter choice.
Tranquil Dawn reflects far more light (LRV 55 vs 6), opening up a space where Iron Ore encloses it.
A 3-point LRV gap (55 vs 52) makes Tranquil Dawn the marginally brighter of the two.
At LRV 55 vs 30, Tranquil Dawn is decisively the brighter choice.
Tranquil Dawn reads slightly lighter (LRV 55 vs 52), a gap that shows most in low-lit rooms.
A 5-point LRV gap (60 vs 55) makes Agreeable Gray the marginally brighter of the two.
With LRVs of 58 and 55, the two reflect almost the same amount of light.
Tranquil Dawn reflects far more light (LRV 55 vs 27), opening up a space where Denim Drift encloses it.
A 12-point LRV gap (55 vs 43) makes Tranquil Dawn the marginally brighter of the two.
At LRV 55 vs 4, Tranquil Dawn is decisively the brighter choice.
Tranquil Dawn reflects far more light (LRV 55 vs 13), opening up a space where Bancha encloses it.
Tranquil Dawn reads slightly lighter (LRV 55 vs 44), a gap that shows most in low-lit rooms.
At LRV 84 vs 55, Pure White is decisively the brighter choice.
At LRV 55 vs 21, Tranquil Dawn is decisively the brighter choice.
Balboa Mist reads slightly lighter (LRV 66 vs 55), a gap that shows most in low-lit rooms.
Shoji White reflects far more light (LRV 74 vs 55), opening up a space where Tranquil Dawn encloses it.
Snowbound reflects far more light (LRV 83 vs 55), opening up a space where Tranquil Dawn encloses it.
Tranquil Dawn reflects far more light (LRV 55 vs 12), opening up a space where Pewter Green encloses it.
Skimming Stone reflects far more light (LRV 68 vs 55), opening up a space where Tranquil Dawn encloses it.
At LRV 55 vs 41, Tranquil Dawn is decisively the brighter choice.
At LRV 68 vs 55, Calamine is decisively the brighter choice.
At LRV 55 vs 25, Tranquil Dawn is decisively the brighter choice.
Tranquil Dawn reflects far more light (LRV 55 vs 12), opening up a space where Vintage Vogue encloses it.
Tranquil Dawn reads slightly lighter (LRV 55 vs 45), a gap that shows most in low-lit rooms.
At LRV 55 vs 31, Tranquil Dawn is decisively the brighter choice.
At LRV 55 vs 7, Tranquil Dawn is decisively the brighter choice.
At LRV 55 vs 24, Tranquil Dawn is decisively the brighter choice.
Their light reflectance is nearly identical (LRV 57 vs 55), so neither reads brighter in a room.
At LRV 72 vs 55, Just Walnut is decisively the brighter choice.