Mountain Stream vs Window grey
Mountain Stream is a PPG color while Window grey comes from RAL Classic. Hue-wise, Mountain Stream belongs to the blue family and Window grey to the blue-grey family. At LRV 41 vs 36, Mountain Stream will read as the brighter of the two — a 5-point gap that matters most in north-facing or low-light rooms. At ΔE 8.7, the difference is perceptible but not dramatic — the two can work harmoniously in the same space. 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 Stream vs Window grey Simulated Comparison
5 simulated room previews — drag the slider on each to see Mountain Stream on one side and Window 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 Stream comparisons
See how Mountain Stream stacks up against other well-photographed colors across different brands and tones.
