Ammonite vs Mountain Air
Ammonite is a Farrow & Ball color while Mountain Air comes from Sherwin-Williams. Ammonite reads as beige-greige, while Mountain Air reads as blue-grey — two distinct hue families, not close cousins. At LRV 73 vs 69, Mountain Air will read as the brighter of the two — a 4-point gap that matters most in north-facing or low-light rooms. The tonal difference — Ammonite's warm character against Mountain Air's cool — becomes most visible against white trim or in morning light. At ΔE 6.6, the difference is perceptible but not dramatic — the two can work harmoniously in the same space. Below you'll find 1 real-room photo comparison where both colors appear side by side, plus 5 simulated room previews.
Ammonite vs Mountain Air in Real Spaces
1 real room side by side. Ammonite and Mountain Air 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.
Dining Room
Dining room light is typically the warmest in the house, which shifts both colors toward the red end of the spectrum compared to daylight. Mountain Air reads slightly lighter here — a subtle but real difference in how open the space feels.
Color Details
Ammonite vs Mountain Air Simulated Comparison
5 simulated room previews — drag the slider on each to see Ammonite on one side and Mountain Air 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 Ammonite comparisons
See how Ammonite stacks up against other well-photographed colors across different brands and tones.
