Blue grey vs Mountain Pass
Blue grey (RAL Classic) and Mountain Pass (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 3-point LRV gap — 16 for Blue grey vs 14 for Mountain Pass — means Blue grey will open up a space more effectively. ΔE 3.1 means they're clearly different, but not dramatically so — they'd pair well in the same room. Below you'll find 1 real-room photo comparison where both colors appear side by side, plus 5 simulated room previews.
Blue grey vs Mountain Pass in Real Spaces
1 real room side by side. Blue grey and Mountain Pass are close enough that the difference can be hard to judge from a chip alone — these photos show how each reads at scale, across different spaces and lighting conditions.
Living Room
A living room wall sees more varied light than almost any other surface in the house, which makes the choice between these two more nuanced than a chip suggests. The distinction reads clearly at room scale, making the choice between them concrete.
Color Details
Blue grey vs Mountain Pass Simulated Comparison
5 simulated room previews — drag the slider on each to see Blue grey on one side and Mountain Pass 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 Blue grey comparisons
See how Blue grey stacks up against other well-photographed colors across different brands and tones.
