Smokestack Gray vs Tranquil Dawn
Where Smokestack Gray belongs to Benjamin Moore's range, Tranquil Dawn is a Dulux color. Smokestack Gray reads as blue-grey, while Tranquil Dawn reads as green-grey — two distinct hue families, not close cousins. Tranquil Dawn (LRV 55) reflects noticeably more light than Smokestack Gray (LRV 23), a difference of 32 points that becomes especially apparent in rooms with limited natural light. Smokestack Gray runs blue while Tranquil Dawn is decidedly neutral, which means they'll respond very differently to warm vs cool light sources. With a ΔE of 26.4, the contrast is hard to miss. These aren't variations on a theme — they're two different answers to the same question. Below you'll find 5 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Smokestack Gray vs Tranquil Dawn in Real Spaces
5 real rooms side by side. Seeing Smokestack 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
In a living room, color works across both daylight and evening light — the same wall can read very differently at noon and at 8pm. The LRV gap is large enough that Tranquil Dawn will make the room feel meaningfully brighter than Smokestack Gray would.
Bedroom
The context that matters most in a bedroom is how a color reads under a bedside lamp at night, not under noon daylight. Tranquil Dawn reflects noticeably more light off the walls, making the space read more open than Smokestack Gray.
Bathroom
Bathrooms are one of the few spaces where you're genuinely enclosed by the paint color, which makes the choice between these two more consequential. Tranquil Dawn reflects noticeably more light off the walls, making the space read more open than Smokestack Gray.
Mudroom
Mudrooms are seen in passing, often under whatever light comes through the door — a context that favors colors with some depth. 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
Kitchen cabinets are constantly compared against adjacent materials, which means subtle differences between these two become much more visible. Tranquil Dawn reflects noticeably more light off the walls, making the space read more open than Smokestack Gray.
Color Details
Smokestack Gray vs Tranquil Dawn Simulated Comparison
5 simulated room previews — drag the slider on each to see Smokestack 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 Smokestack Gray comparisons
See how Smokestack Gray stacks up against other well-photographed colors across different brands and tones.
White Dove reflects far more light (LRV 83 vs 23), opening up a space where Smokestack Gray encloses it.
At LRV 69 vs 23, Ammonite is decisively the brighter choice.
Smokestack Gray reflects far more light (LRV 23 vs 6), opening up a space where Iron Ore encloses it.
At LRV 52 vs 23, Purbeck Stone is decisively the brighter choice.
A 8-point LRV gap (30 vs 23) makes Evergreen Fog the marginally brighter of the two.
Mizzle reflects far more light (LRV 52 vs 23), opening up a space where Smokestack Gray encloses it.
At LRV 60 vs 23, Agreeable Gray is decisively the brighter choice.
Accessible Beige reflects far more light (LRV 58 vs 23), opening up a space where Smokestack Gray encloses it.
Denim Drift reads slightly lighter (LRV 27 vs 23), a gap that shows most in low-lit rooms.
At LRV 43 vs 23, French Gray is decisively the brighter choice.
At LRV 23 vs 4, Smokestack Gray is decisively the brighter choice.
Smokestack Gray reads slightly lighter (LRV 23 vs 13), a gap that shows most in low-lit rooms.
Hardwick White reflects far more light (LRV 44 vs 23), opening up a space where Smokestack Gray encloses it.
At LRV 84 vs 23, Pure White is decisively the brighter choice.
Their light reflectance is nearly identical (LRV 23 vs 21), so neither reads brighter in a room.
Balboa Mist reflects far more light (LRV 66 vs 23), opening up a space where Smokestack Gray encloses it.
Shoji White reflects far more light (LRV 74 vs 23), opening up a space where Smokestack Gray encloses it.
Snowbound reflects far more light (LRV 83 vs 23), opening up a space where Smokestack Gray encloses it.
Smokestack Gray reads slightly lighter (LRV 23 vs 12), a gap that shows most in low-lit rooms.
Skimming Stone reflects far more light (LRV 68 vs 23), opening up a space where Smokestack Gray encloses it.
At LRV 41 vs 23, Dix Blue is decisively the brighter choice.
At LRV 68 vs 23, Calamine is decisively the brighter choice.
Their light reflectance is nearly identical (LRV 25 vs 23), so neither reads brighter in a room.
Smokestack Gray reads slightly lighter (LRV 23 vs 12), a gap that shows most in low-lit rooms.
Saybrook Sage reflects far more light (LRV 45 vs 23), opening up a space where Smokestack Gray encloses it.
A 8-point LRV gap (31 vs 23) makes Pale Green the marginally brighter of the two.
At LRV 23 vs 7, Smokestack Gray is decisively the brighter choice.
Their light reflectance is nearly identical (LRV 24 vs 23), so neither reads brighter in a room.
At LRV 57 vs 23, Guilford Green is decisively the brighter choice.
At LRV 72 vs 23, Just Walnut is decisively the brighter choice.