Rapid Rock vs Cement grey
Rapid Rock (PPG) and Cement grey (RAL Classic) come from different manufacturers. Hue-wise, Rapid Rock belongs to the beige-greige family and Cement grey to the grey family. The 6-point LRV gap — 30 for Rapid Rock vs 24 for Cement grey — means Rapid Rock will open up a space more effectively. A ΔE of 11.5 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
Rapid Rock vs Cement grey Simulated Comparison
5 simulated room previews — drag the slider on each to see Rapid Rock on one side and Cement 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 Rapid Rock comparisons
See how Rapid Rock stacks up against other well-photographed colors across different brands and tones.
