Earl Blue vs S 3005-B20G
Where Earl Blue belongs to Dulux's range, S 3005-B20G is a NCS color. These are both blue-greys, so the question isn't which hue to choose — it's where within blue-grey to land. They have nearly identical light reflectance values (41 vs 40), so they'll read as similarly Medium in most lighting conditions. Earl Blue runs cool while S 3005-B20G is decidedly neutral, which means they'll respond very differently to warm vs cool light sources. At ΔE 1.9, these are close — the kind of difference that matters when choosing between them, but doesn't read strongly in a finished room. Below, 5 simulated room previews show how each color reads at scale — real-room photos will be added as they become available.
Color Details
Earl Blue vs S 3005-B20G Simulated Comparison
5 simulated room previews — drag the slider on each to see Earl Blue on one side and S 3005-B20G 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.
Earl Blue reflects far more light (LRV 41 vs 8), opening up a space where Duck 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.