Mountain Air vs Black grey
Mountain Air (Benjamin Moore) and Black grey (RAL Classic) come from different manufacturers. Hue-wise, Mountain Air belongs to the greige-grey family and Black grey to the blue-grey family. The 46-point LRV gap — 53 for Mountain Air vs 6 for Black grey — means Mountain Air will open up a space more effectively. A ΔE of 58.6 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
Mountain Air vs Black grey Simulated Comparison
5 simulated room previews — drag the slider on each to see Mountain Air on one side and Black 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 Mountain Air comparisons
See how Mountain Air stacks up against other well-photographed colors across different brands and tones.
