Cool Gray vs Telegrey 4
Where Cool Gray belongs to PPG's range, Telegrey 4 is a RAL Classic color. Cool Gray reads as blue-grey, while Telegrey 4 reads as grey — two distinct hue families, not close cousins. They have nearly identical light reflectance values (60 vs 59), so they'll read as similarly Light in most lighting conditions. The ΔE 6.3 gap is real but not dramatic — close enough to use together, distinct enough to matter as a choice. Below, 5 simulated room previews show how each color reads at scale — real-room photos will be added as they become available.
Color Details
Cool Gray vs Telegrey 4 Simulated Comparison
5 simulated room previews — drag the slider on each to see Cool Gray on one side and Telegrey 4 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 Cool Gray comparisons
See how Cool Gray stacks up against other well-photographed colors across different brands and tones.
