Cement grey vs Mountain Stream
Cement grey (RAL Classic) and Mountain Stream (Sherwin-Williams) come from different manufacturers. Cement grey reads as grey, while Mountain Stream reads as blue — two distinct hue families, not close cousins. Their light reflectance values are nearly the same — 24 vs 25 — so neither will read significantly brighter or darker than the other. A ΔE of 18.5 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
Cement grey vs Mountain Stream Simulated Comparison
5 simulated room previews — drag the slider on each to see Cement grey on one side and Mountain Stream 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 Cement grey comparisons
See how Cement grey stacks up against other well-photographed colors across different brands and tones.
