Earl Blue vs RAL 820-2
Earl Blue is a Dulux color while RAL 820-2 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 41 and 42, they'll behave almost identically in terms of how much light they reflect back into a room. With a ΔE of 2.6, 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.
Earl Blue vs RAL 820-2 in Real Spaces
3 real rooms side by side. Earl Blue and RAL 820-2 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.
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
Earl Blue vs RAL 820-2 Simulated Comparison
5 simulated room previews — drag the slider on each to see Earl Blue on one side and RAL 820-2 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 Earl Blue comparisons
See how Earl Blue stacks up against other well-photographed colors across different brands and tones.
White Dove reflects far more light (LRV 83 vs 41), opening up a space where Earl Blue encloses it.
A 11-point LRV gap (52 vs 41) makes Purbeck Stone the marginally brighter of the two.
A 11-point LRV gap (41 vs 30) makes Earl Blue the marginally brighter of the two.
At LRV 60 vs 41, Agreeable Gray is decisively the brighter choice.
Accessible Beige reflects far more light (LRV 58 vs 41), opening up a space where Earl Blue encloses it.
Earl Blue reflects far more light (LRV 41 vs 27), opening up a space where Denim Drift encloses it.
Their light reflectance is nearly identical (LRV 43 vs 41), so neither reads brighter in a room.
Tranquil Dawn reflects far more light (LRV 55 vs 41), opening up a space where Earl Blue encloses it.
With LRVs of 44 and 41, the two reflect almost the same amount of light.
At LRV 84 vs 41, Pure White is decisively the brighter choice.
Balboa Mist reflects far more light (LRV 66 vs 41), opening up a space where Earl Blue encloses it.
Shoji White reflects far more light (LRV 74 vs 41), opening up a space where Earl Blue encloses it.
Earl Blue reflects far more light (LRV 41 vs 12), opening up a space where Pewter Green encloses it.
Skimming Stone reflects far more light (LRV 68 vs 41), opening up a space where Earl Blue encloses it.
Earl Blue reflects far more light (LRV 41 vs 12), opening up a space where Vintage Vogue encloses it.
Saybrook Sage reads slightly lighter (LRV 45 vs 41), a gap that shows most in low-lit rooms.
A 10-point LRV gap (41 vs 31) makes Earl Blue the marginally brighter of the two.
At LRV 41 vs 7, Earl Blue is decisively the brighter choice.
At LRV 41 vs 24, Earl Blue is decisively the brighter choice.
At LRV 57 vs 41, Guilford Green is decisively the brighter choice.