Quartz Flint 1 vs RAL 820-3
Quartz Flint 1 is a Dulux color while RAL 820-3 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 31 and 29, they'll behave almost identically in terms of how much light they reflect back into a room. With a ΔE of 0.9, the difference is subtle — you'd need them side by side to reliably tell them apart. Below, 5 simulated room previews show how each color reads at scale — real-room photos will be added as they become available.
Color Details
Quartz Flint 1 vs RAL 820-3 Simulated Comparison
5 simulated room previews — drag the slider on each to see Quartz Flint 1 on one side and RAL 820-3 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 Quartz Flint 1 comparisons
See how Quartz Flint 1 stacks up against other well-photographed colors across different brands and tones.
White Dove reflects far more light (LRV 83 vs 31), opening up a space where Quartz Flint 1 encloses it.
At LRV 69 vs 31, Ammonite is decisively the brighter choice.
Quartz Flint 1 reflects far more light (LRV 31 vs 6), opening up a space where Iron Ore encloses it.
At LRV 52 vs 31, Purbeck Stone is decisively the brighter choice.
Their light reflectance is nearly identical (LRV 31 vs 30), so neither reads brighter in a room.
Mizzle reflects far more light (LRV 52 vs 31), opening up a space where Quartz Flint 1 encloses it.
At LRV 60 vs 31, Agreeable Gray is decisively the brighter choice.
Accessible Beige reflects far more light (LRV 58 vs 31), opening up a space where Quartz Flint 1 encloses it.
Quartz Flint 1 reads slightly lighter (LRV 31 vs 27), a gap that shows most in low-lit rooms.
At LRV 43 vs 31, French Gray is decisively the brighter choice.
At LRV 31 vs 4, Quartz Flint 1 is decisively the brighter choice.
Tranquil Dawn reflects far more light (LRV 55 vs 31), opening up a space where Quartz Flint 1 encloses it.
Quartz Flint 1 reflects far more light (LRV 31 vs 13), opening up a space where Bancha encloses it.
Hardwick White reflects far more light (LRV 44 vs 31), opening up a space where Quartz Flint 1 encloses it.
At LRV 84 vs 31, Pure White is decisively the brighter choice.
A 10-point LRV gap (31 vs 21) makes Quartz Flint 1 the marginally brighter of the two.
Balboa Mist reflects far more light (LRV 66 vs 31), opening up a space where Quartz Flint 1 encloses it.
Shoji White reflects far more light (LRV 74 vs 31), opening up a space where Quartz Flint 1 encloses it.
Snowbound reflects far more light (LRV 83 vs 31), opening up a space where Quartz Flint 1 encloses it.
Quartz Flint 1 reflects far more light (LRV 31 vs 12), opening up a space where Pewter Green encloses it.
Skimming Stone reflects far more light (LRV 68 vs 31), opening up a space where Quartz Flint 1 encloses it.
A 10-point LRV gap (41 vs 31) makes Dix Blue the marginally brighter of the two.
At LRV 68 vs 31, Calamine is decisively the brighter choice.
A 6-point LRV gap (31 vs 25) makes Quartz Flint 1 the marginally brighter of the two.
Quartz Flint 1 reflects far more light (LRV 31 vs 12), opening up a space where Vintage Vogue encloses it.
Saybrook Sage reflects far more light (LRV 45 vs 31), opening up a space where Quartz Flint 1 encloses it.
Their light reflectance is nearly identical (LRV 31 vs 31), so neither reads brighter in a room.
At LRV 31 vs 7, Quartz Flint 1 is decisively the brighter choice.
A 7-point LRV gap (31 vs 24) makes Quartz Flint 1 the marginally brighter of the two.
At LRV 57 vs 31, Guilford Green is decisively the brighter choice.