Iron Mountain vs Cement grey
Iron Mountain (Benjamin Moore) and Cement grey (RAL Classic) come from different manufacturers. These are both greys, so the question isn't which hue to choose — it's where within grey to land. The 13-point LRV gap — 24 for Cement grey vs 11 for Iron Mountain — means Cement grey will open up a space more effectively. A ΔE of 18.9 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 Cement grey Simulated Comparison
5 simulated room previews — drag the slider on each to see Iron Mountain on one side and Cement grey 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.
