Ammonite vs Keystone Gray
Ammonite (Farrow & Ball) and Keystone Gray (Sherwin-Williams) come from different manufacturers. Ammonite reads as beige-greige, while Keystone Gray reads as greige-grey — two distinct hue families, not close cousins. The 39-point LRV gap — 69 for Ammonite vs 29 for Keystone Gray — means Ammonite will open up a space more effectively. Both share a warm character, which means they'll respond to light and surrounding materials in similar ways. A ΔE of 25.7 puts these firmly in different territory — two distinct design choices rather than close alternatives. Below you'll find 2 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Ammonite vs Keystone Gray in Real Spaces
2 real rooms side by side. Seeing Ammonite and Keystone Gray in actual rooms makes the difference concrete; browse the spaces below to get a feel for how each color lives on a wall.
Dining Room
Dining rooms often rely on warm incandescent or candlelight, which flatters warm undertones and mutes cool ones. The LRV gap is large enough that Ammonite will make the room feel meaningfully brighter than Keystone Gray would.
Bathroom
Small bathrooms intensify color. A shade that seems quiet in a larger room can feel immersive when you're surrounded by it on four walls. 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
Ammonite vs Keystone Gray Simulated Comparison
5 simulated room previews — drag the slider on each to see Ammonite on one side and Keystone Gray 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.
