Cool Gray vs RAL 170-1
Cool Gray (PPG) and RAL 170-1 (RAL Effect) come from different manufacturers. Both sit in the blue-grey family, which is useful context if you're narrowing within a single hue direction. Their light reflectance values are nearly the same — 60 vs 58 — so neither will read significantly brighter or darker than the other. ΔE 4.2 means they're clearly different, but not dramatically so — they'd pair well in the same room. 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 RAL 170-1 Simulated Comparison
5 simulated room previews — drag the slider on each to see Cool Gray on one side and RAL 170-1 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.
At LRV 83 vs 60, White Dove is decisively the brighter choice.
Cool Gray reads slightly lighter (LRV 60 vs 52), a gap that shows most in low-lit rooms.
Cool Gray reflects far more light (LRV 60 vs 30), opening up a space where Evergreen Fog encloses it.
With LRVs of 60 and 60, the two reflect almost the same amount of light.
Their light reflectance is nearly identical (LRV 60 vs 58), so neither reads brighter in a room.
At LRV 60 vs 27, Cool Gray is decisively the brighter choice.
Cool Gray reflects far more light (LRV 60 vs 43), opening up a space where French Gray encloses it.
A 5-point LRV gap (60 vs 55) makes Cool Gray the marginally brighter of the two.
At LRV 60 vs 44, Cool Gray is decisively the brighter choice.
Pure White reflects far more light (LRV 84 vs 60), opening up a space where Cool Gray encloses it.
A 6-point LRV gap (66 vs 60) makes Balboa Mist the marginally brighter of the two.
At LRV 74 vs 60, Shoji White is decisively the brighter choice.
At LRV 60 vs 12, Cool Gray is decisively the brighter choice.
At LRV 60 vs 8, Cool Gray is decisively the brighter choice.
A 8-point LRV gap (68 vs 60) makes Skimming Stone the marginally brighter of the two.
At LRV 60 vs 12, Cool Gray is decisively the brighter choice.
At LRV 60 vs 45, Cool Gray is decisively the brighter choice.
Cool Gray reflects far more light (LRV 60 vs 31), opening up a space where Pale Green encloses it.