RAL 170-1 vs RAL 820-1
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 58 and 57, they'll behave almost identically in terms of how much light they reflect back into a room. With a ΔE of 2.7, 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 170-1 vs RAL 820-1 in Real Spaces
3 real rooms side by side. RAL 170-1 and RAL 820-1 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.
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
RAL 170-1 vs RAL 820-1 Simulated Comparison
5 simulated room previews — drag the slider on each to see RAL 170-1 on one side and RAL 820-1 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 170-1 comparisons
See how RAL 170-1 stacks up against other well-photographed colors across different brands and tones.
White Dove reflects far more light (LRV 83 vs 58), opening up a space where RAL 170-1 encloses it.
A 7-point LRV gap (58 vs 52) makes RAL 170-1 the marginally brighter of the two.
At LRV 58 vs 30, RAL 170-1 is decisively the brighter choice.
Their light reflectance is nearly identical (LRV 60 vs 58), so neither reads brighter in a room.
With LRVs of 58 and 58, the two reflect almost the same amount of light.
RAL 170-1 reflects far more light (LRV 58 vs 27), opening up a space where Denim Drift encloses it.
At LRV 58 vs 43, RAL 170-1 is decisively the brighter choice.
RAL 170-1 reads slightly lighter (LRV 58 vs 55), a gap that shows most in low-lit rooms.
RAL 170-1 reflects far more light (LRV 58 vs 44), opening up a space where Hardwick White encloses it.
At LRV 84 vs 58, Pure White is decisively the brighter choice.
Balboa Mist reads slightly lighter (LRV 66 vs 58), a gap that shows most in low-lit rooms.
Shoji White reflects far more light (LRV 74 vs 58), opening up a space where RAL 170-1 encloses it.
RAL 170-1 reflects far more light (LRV 58 vs 12), opening up a space where Pewter Green encloses it.
RAL 170-1 reflects far more light (LRV 58 vs 8), opening up a space where Duck Green encloses it.
Skimming Stone reads slightly lighter (LRV 68 vs 58), a gap that shows most in low-lit rooms.
RAL 170-1 reflects far more light (LRV 58 vs 12), opening up a space where Vintage Vogue encloses it.
RAL 170-1 reflects far more light (LRV 58 vs 45), opening up a space where Saybrook Sage encloses it.
At LRV 58 vs 31, RAL 170-1 is decisively the brighter choice.