Onyx vs RAL 870-5
Onyx is a PPG color while RAL 870-5 comes from RAL Effect. These are both greys, so the question isn't which hue to choose — it's where within grey to land. With LRVs of 6 and 7, they'll behave almost identically in terms of how much light they reflect back into a room. With a ΔE of 1.5, the difference is subtle — you'd need them side by side to reliably tell them apart. Below you'll find 4 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Onyx vs RAL 870-5 in Real Spaces
4 real rooms side by side. Onyx and RAL 870-5 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
Living rooms test a color across a full range of conditions — morning sun, afternoon shade, and evening lamp light all shift how both of these read. In photos like these you're seeing the difference at its most direct. In a finished room, the distinction is there but not dramatic.
Bedroom
Bedroom walls are often seen under warm artificial light, a context that shifts both colors from how they look on a chip. The two are close enough that the choice comes down to finer qualities — undertone, texture, what the color sits next to.
Kitchen
Kitchen lighting tends to be bright and directional, which sharpens contrast and makes undertone differences more apparent. The two are close enough that the choice comes down to finer qualities — undertone, texture, what the color sits next to.
Color Details
Onyx vs RAL 870-5 Simulated Comparison
5 simulated room previews — drag the slider on each to see Onyx on one side and RAL 870-5 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 Onyx comparisons
See how Onyx stacks up against other well-photographed colors across different brands and tones.
White Dove reflects far more light (LRV 83 vs 6), opening up a space where Onyx encloses it.
At LRV 52 vs 6, Purbeck Stone is decisively the brighter choice.
At LRV 30 vs 6, Evergreen Fog is decisively the brighter choice.
At LRV 60 vs 6, Agreeable Gray is decisively the brighter choice.
Accessible Beige reflects far more light (LRV 58 vs 6), opening up a space where Onyx encloses it.
Denim Drift reflects far more light (LRV 27 vs 6), opening up a space where Onyx encloses it.
At LRV 43 vs 6, French Gray is decisively the brighter choice.
Tranquil Dawn reflects far more light (LRV 55 vs 6), opening up a space where Onyx encloses it.
Hardwick White reflects far more light (LRV 44 vs 6), opening up a space where Onyx encloses it.
At LRV 84 vs 6, Pure White is decisively the brighter choice.
Balboa Mist reflects far more light (LRV 66 vs 6), opening up a space where Onyx encloses it.
Shoji White reflects far more light (LRV 74 vs 6), opening up a space where Onyx encloses it.
Pewter Green reads slightly lighter (LRV 12 vs 6), a gap that shows most in low-lit rooms.
With LRVs of 8 and 6, the two reflect almost the same amount of light.
Skimming Stone reflects far more light (LRV 68 vs 6), opening up a space where Onyx encloses it.
Vintage Vogue reads slightly lighter (LRV 12 vs 6), a gap that shows most in low-lit rooms.
Saybrook Sage reflects far more light (LRV 45 vs 6), opening up a space where Onyx encloses it.
At LRV 31 vs 6, Pale Green is decisively the brighter choice.