Iron Mountain vs Ammonite
Iron Mountain (Benjamin Moore) and Ammonite (Farrow & Ball) come from different manufacturers. Hue-wise, Iron Mountain belongs to the grey family and Ammonite to the beige-greige family. The 58-point LRV gap — 69 for Ammonite vs 11 for Iron Mountain — means Ammonite will open up a space more effectively. Where Iron Mountain leans red, Ammonite reads warm — a distinction that shifts noticeably depending on the light source and surrounding finishes. A ΔE of 50.4 puts these firmly in different territory — two distinct design choices rather than close alternatives. Below, 5 simulated room previews show how each color reads at scale — real-room photos will be added as they become available.
Color Details
Iron Mountain vs Ammonite Simulated Comparison
5 simulated room previews — drag the slider on each to see Iron Mountain 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 Iron Mountain comparisons
See how Iron Mountain stacks up against other well-photographed colors across different brands and tones.
