Black grey vs Mountain Air
Black grey (RAL Classic) and Mountain Air (Sherwin-Williams) come from different manufacturers. Both sit in the blue-grey family, which is useful context if you're narrowing within a single hue direction. The 67-point LRV gap — 73 for Mountain Air vs 6 for Black grey — means Mountain Air will open up a space more effectively. A ΔE of 68.0 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
Black grey vs Mountain Air Simulated Comparison
5 simulated room previews — drag the slider on each to see Black grey 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 Black grey comparisons
See how Black grey stacks up against other well-photographed colors across different brands and tones.
