RAL 810-3 vs RAL 820-4
Both are RAL Effect colors. Both sit in the blue-grey family, which is useful context if you're narrowing within a single hue direction. With LRVs of 23 and 23, they'll behave almost identically in terms of how much light they reflect back into a room. With a ΔE of 2.9, 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.
RAL 810-3 vs RAL 820-4 in Real Spaces
3 real rooms side by side. RAL 810-3 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.
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
RAL 810-3 vs RAL 820-4 Simulated Comparison
5 simulated room previews — drag the slider on each to see RAL 810-3 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 RAL 810-3 comparisons
See how RAL 810-3 stacks up against other well-photographed colors across different brands and tones.
At LRV 83 vs 23, White Dove is decisively the brighter choice.
Purbeck Stone reflects far more light (LRV 52 vs 23), opening up a space where RAL 810-3 encloses it.
Evergreen Fog reads slightly lighter (LRV 30 vs 23), a gap that shows most in low-lit rooms.
Agreeable Gray reflects far more light (LRV 60 vs 23), opening up a space where RAL 810-3 encloses it.
At LRV 58 vs 23, Accessible Beige is decisively the brighter choice.
A 4-point LRV gap (27 vs 23) makes Denim Drift the marginally brighter of the two.
French Gray reflects far more light (LRV 43 vs 23), opening up a space where RAL 810-3 encloses it.
At LRV 55 vs 23, Tranquil Dawn is decisively the brighter choice.
At LRV 44 vs 23, Hardwick White is decisively the brighter choice.
Pure White reflects far more light (LRV 84 vs 23), opening up a space where RAL 810-3 encloses it.
At LRV 66 vs 23, Balboa Mist is decisively the brighter choice.
At LRV 74 vs 23, Shoji White is decisively the brighter choice.
A 11-point LRV gap (23 vs 12) makes RAL 810-3 the marginally brighter of the two.
At LRV 23 vs 8, RAL 810-3 is decisively the brighter choice.
At LRV 68 vs 23, Skimming Stone is decisively the brighter choice.
A 11-point LRV gap (23 vs 12) makes RAL 810-3 the marginally brighter of the two.
At LRV 45 vs 23, Saybrook Sage is decisively the brighter choice.
Pale Green reads slightly lighter (LRV 31 vs 23), a gap that shows most in low-lit rooms.