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.
