Horizon Gray vs Tranquil Dawn
Where Horizon Gray belongs to Benjamin Moore's range, Tranquil Dawn is a Dulux color. Horizon Gray reads as greige-grey, while Tranquil Dawn reads as green-grey — two distinct hue families, not close cousins. Tranquil Dawn (LRV 55) reflects noticeably more light than Horizon Gray (LRV 51), a difference of 4 points that becomes especially apparent in rooms with limited natural light. Horizon Gray runs yellow while Tranquil Dawn is decidedly neutral, which means they'll respond very differently to warm vs cool light sources. The ΔE 3.4 gap is real but not dramatic — close enough to use together, distinct enough to matter as a choice. Below you'll find 3 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Horizon Gray vs Tranquil Dawn in Real Spaces
3 real rooms side by side. Horizon 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.
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 reads slightly lighter here — a subtle but real difference in how open the space feels.
Dining Room
A dining room lit by a dimmed pendant or candles is one of the most forgiving environments for paint — warm light softens almost everything. Tranquil Dawn has the edge in reflectance, which shows as a quiet sense of added space rather than an obvious contrast.
Mudroom
Mudrooms are seen in passing, often under whatever light comes through the door — a context that favors colors with some depth. Tranquil Dawn has the edge in reflectance, which shows as a quiet sense of added space rather than an obvious contrast.
Color Details
Horizon Gray vs Tranquil Dawn Simulated Comparison
5 simulated room previews — drag the slider on each to see Horizon 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 Horizon Gray comparisons
See how Horizon Gray stacks up against other well-photographed colors across different brands and tones.
White Dove reflects far more light (LRV 83 vs 51), opening up a space where Horizon Gray encloses it.
At LRV 69 vs 51, Ammonite is decisively the brighter choice.
Horizon Gray reflects far more light (LRV 51 vs 6), opening up a space where Iron Ore encloses it.
Their light reflectance is nearly identical (LRV 52 vs 51), so neither reads brighter in a room.
At LRV 51 vs 30, Horizon Gray is decisively the brighter choice.
With LRVs of 52 and 51, the two reflect almost the same amount of light.
A 10-point LRV gap (60 vs 51) makes Agreeable Gray the marginally brighter of the two.
Accessible Beige reads slightly lighter (LRV 58 vs 51), a gap that shows most in low-lit rooms.
Horizon Gray reflects far more light (LRV 51 vs 27), opening up a space where Denim Drift encloses it.
A 7-point LRV gap (51 vs 43) makes Horizon Gray the marginally brighter of the two.
At LRV 51 vs 4, Horizon Gray is decisively the brighter choice.
Horizon Gray reflects far more light (LRV 51 vs 13), opening up a space where Bancha encloses it.
Horizon Gray reads slightly lighter (LRV 51 vs 44), a gap that shows most in low-lit rooms.
At LRV 84 vs 51, Pure White is decisively the brighter choice.
At LRV 51 vs 21, Horizon Gray is decisively the brighter choice.
Balboa Mist reflects far more light (LRV 66 vs 51), opening up a space where Horizon Gray encloses it.
Shoji White reflects far more light (LRV 74 vs 51), opening up a space where Horizon Gray encloses it.
Snowbound reflects far more light (LRV 83 vs 51), opening up a space where Horizon Gray encloses it.
Horizon Gray reflects far more light (LRV 51 vs 12), opening up a space where Pewter Green encloses it.
Skimming Stone reflects far more light (LRV 68 vs 51), opening up a space where Horizon Gray encloses it.
A 10-point LRV gap (51 vs 41) makes Horizon Gray the marginally brighter of the two.
At LRV 68 vs 51, Calamine is decisively the brighter choice.
At LRV 51 vs 25, Horizon Gray is decisively the brighter choice.
Horizon Gray reflects far more light (LRV 51 vs 12), opening up a space where Vintage Vogue encloses it.
Horizon Gray reads slightly lighter (LRV 51 vs 45), a gap that shows most in low-lit rooms.
At LRV 51 vs 31, Horizon Gray is decisively the brighter choice.
At LRV 51 vs 7, Horizon Gray is decisively the brighter choice.
At LRV 51 vs 24, Horizon Gray is decisively the brighter choice.
A 7-point LRV gap (57 vs 51) makes Guilford Green the marginally brighter of the two.
At LRV 72 vs 51, Just Walnut is decisively the brighter choice.