Superhero Gray vs RAL 820-4
Superhero Gray is a PPG color while RAL 820-4 comes from RAL Effect. Both sit in the blue-grey family, which is useful context if you're narrowing within a single hue direction. With LRVs of 25 and 23, they'll behave almost identically in terms of how much light they reflect back into a room. With a ΔE of 3.0, the difference is subtle — you'd need them side by side to reliably tell them apart. Below you'll find 3 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Superhero Gray vs RAL 820-4 in Real Spaces
3 real rooms side by side. Superhero Gray and RAL 820-4 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.
Bathroom
Bathrooms amplify color — the enclosed space and reflective surfaces make what reads subtle elsewhere feel more present here. The two are close enough that the choice comes down to finer qualities — undertone, texture, what the color sits next to.
Color Details
Superhero Gray vs RAL 820-4 Simulated Comparison
5 simulated room previews — drag the slider on each to see Superhero Gray on one side and RAL 820-4 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 Superhero Gray comparisons
See how Superhero Gray stacks up against other well-photographed colors across different brands and tones.
Ammonite reflects far more light (LRV 69 vs 25), opening up a space where Superhero Gray encloses it.
At LRV 83 vs 25, White Dove is decisively the brighter choice.
At LRV 25 vs 6, Superhero Gray is decisively the brighter choice.
Purbeck Stone reflects far more light (LRV 52 vs 25), opening up a space where Superhero Gray encloses it.
Evergreen Fog reads slightly lighter (LRV 30 vs 25), a gap that shows most in low-lit rooms.
At LRV 52 vs 25, Mizzle is decisively the brighter choice.
Agreeable Gray reflects far more light (LRV 60 vs 25), opening up a space where Superhero Gray encloses it.
At LRV 58 vs 25, Accessible Beige is decisively the brighter choice.
Their light reflectance is nearly identical (LRV 27 vs 25), so neither reads brighter in a room.
French Gray reflects far more light (LRV 43 vs 25), opening up a space where Superhero Gray encloses it.
Superhero Gray reflects far more light (LRV 25 vs 4), opening up a space where Naval encloses it.
At LRV 55 vs 25, Tranquil Dawn is decisively the brighter choice.
A 12-point LRV gap (25 vs 13) makes Superhero Gray the marginally brighter of the two.
At LRV 44 vs 25, Hardwick White is decisively the brighter choice.
Pure White reflects far more light (LRV 84 vs 25), opening up a space where Superhero Gray encloses it.
Superhero Gray reads slightly lighter (LRV 25 vs 21), a gap that shows most in low-lit rooms.
At LRV 66 vs 25, Balboa Mist is decisively the brighter choice.
At LRV 74 vs 25, Shoji White is decisively the brighter choice.
At LRV 83 vs 25, Snowbound is decisively the brighter choice.
Pigeon reflects far more light (LRV 51 vs 25), opening up a space where Superhero Gray encloses it.
At LRV 25 vs 12, Superhero Gray is decisively the brighter choice.
At LRV 25 vs 8, Superhero Gray is decisively the brighter choice.
At LRV 68 vs 25, Skimming Stone is decisively the brighter choice.
Dix Blue reflects far more light (LRV 41 vs 25), opening up a space where Superhero Gray encloses it.
At LRV 25 vs 12, Superhero Gray is decisively the brighter choice.
At LRV 45 vs 25, Saybrook Sage is decisively the brighter choice.
Pale Green reads slightly lighter (LRV 31 vs 25), a gap that shows most in low-lit rooms.