Horizon Gray vs Ammonite
Where Horizon Gray belongs to Benjamin Moore's range, Ammonite is a Farrow & Ball color. Hue-wise, Horizon Gray belongs to the greige-grey family and Ammonite to the beige-greige family. Ammonite (LRV 69) reflects noticeably more light than Horizon Gray (LRV 51), a difference of 18 points that becomes especially apparent in rooms with limited natural light. Horizon Gray runs yellow while Ammonite is decidedly warm, which means they'll respond very differently to warm vs cool light sources. With a ΔE of 10.1, 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 2 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Horizon Gray vs Ammonite in Real Spaces
2 real rooms side by side. Seeing Horizon Gray and Ammonite in actual rooms makes the difference concrete; browse the spaces below to get a feel for how each color lives on a wall.
Bedroom
The context that matters most in a bedroom is how a color reads under a bedside lamp at night, not under noon daylight. Ammonite reflects noticeably more light off the walls, making the space read more open than Horizon Gray.
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. Ammonite returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
Color Details
Horizon Gray vs Ammonite Simulated Comparison
5 simulated room previews — drag the slider on each to see Horizon Gray on one side and Ammonite 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.
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.
Tranquil Dawn reads slightly lighter (LRV 55 vs 51), a gap that shows most in low-lit rooms.
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.