Slate Mine vs Mouse grey
Slate Mine (PPG) and Mouse grey (RAL Classic) come from different manufacturers. Both sit in the grey family, which is useful context if you're narrowing within a single hue direction. Their light reflectance values are nearly the same — 16 vs 18 — so neither will read significantly brighter or darker than the other. A ΔE of 2.3 puts them in subtle territory — distinguishable in direct comparison, less so from across a room. Below you'll find 2 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Slate Mine vs Mouse grey in Real Spaces
2 real rooms side by side. Slate Mine and Mouse grey are close enough that the difference can be hard to judge from a chip alone — these photos show how each reads at scale, across different spaces and lighting conditions.
Living Room
A living room wall sees more varied light than almost any other surface in the house, which makes the choice between these two more nuanced than a chip suggests. At this scale the difference is subtle — you'd need them side by side, as shown here, to reliably tell them apart.
Kitchen
Kitchens often have the harshest, most revealing light in the house — under-cabinet LEDs and overhead fixtures that strip away subtlety. In photos like these you're seeing the difference at its most direct. In a finished room, the distinction is there but not dramatic.
Color Details
Slate Mine vs Mouse grey Simulated Comparison
5 simulated room previews — drag the slider on each to see Slate Mine on one side and Mouse 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 Slate Mine comparisons
See how Slate Mine stacks up against other well-photographed colors across different brands and tones.
Ammonite reflects far more light (LRV 69 vs 16), opening up a space where Slate Mine encloses it.
At LRV 83 vs 16, White Dove is decisively the brighter choice.
A 10-point LRV gap (16 vs 6) makes Slate Mine the marginally brighter of the two.
Purbeck Stone reflects far more light (LRV 52 vs 16), opening up a space where Slate Mine encloses it.
Evergreen Fog reflects far more light (LRV 30 vs 16), opening up a space where Slate Mine encloses it.
At LRV 52 vs 16, Mizzle is decisively the brighter choice.
Agreeable Gray reflects far more light (LRV 60 vs 16), opening up a space where Slate Mine encloses it.
At LRV 58 vs 16, Accessible Beige is decisively the brighter choice.
A 11-point LRV gap (27 vs 16) makes Denim Drift the marginally brighter of the two.
French Gray reflects far more light (LRV 43 vs 16), opening up a space where Slate Mine encloses it.
Slate Mine reads slightly lighter (LRV 16 vs 4), a gap that shows most in low-lit rooms.
At LRV 55 vs 16, Tranquil Dawn is decisively the brighter choice.
Their light reflectance is nearly identical (LRV 16 vs 13), so neither reads brighter in a room.
At LRV 44 vs 16, Hardwick White is decisively the brighter choice.
Pure White reflects far more light (LRV 84 vs 16), opening up a space where Slate Mine encloses it.
Artichoke reads slightly lighter (LRV 21 vs 16), a gap that shows most in low-lit rooms.
At LRV 66 vs 16, Balboa Mist is decisively the brighter choice.
At LRV 74 vs 16, Shoji White is decisively the brighter choice.
At LRV 83 vs 16, Snowbound is decisively the brighter choice.
Pigeon reflects far more light (LRV 51 vs 16), opening up a space where Slate Mine encloses it.
A 4-point LRV gap (16 vs 12) makes Slate Mine the marginally brighter of the two.
A 8-point LRV gap (16 vs 8) makes Slate Mine the marginally brighter of the two.
At LRV 68 vs 16, Skimming Stone is decisively the brighter choice.
Dix Blue reflects far more light (LRV 41 vs 16), opening up a space where Slate Mine encloses it.
A 4-point LRV gap (16 vs 12) makes Slate Mine the marginally brighter of the two.
At LRV 45 vs 16, Saybrook Sage is decisively the brighter choice.
Pale Green reflects far more light (LRV 31 vs 16), opening up a space where Slate Mine encloses it.