Oslo Blue vs Rain
Oslo Blue is a Behr color while Rain comes from Sherwin-Williams. Oslo Blue reads as blue, while Rain reads as blue-grey — two distinct hue families, not close cousins. With LRVs of 47 and 49, they'll behave almost identically in terms of how much light they reflect back into a room. The tonal difference — Oslo Blue's blue character against Rain's cool — becomes most visible against white trim or in morning light. With a ΔE of 1.5, the difference is subtle — you'd need them side by side to reliably tell them apart. Below you'll find 1 real-room photo comparison where both colors appear side by side, plus 5 simulated room previews.
Oslo Blue vs Rain in Real Spaces
1 real room side by side. Oslo Blue and Rain 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.
Front Door
Front doors are seen in isolation against the rest of the facade, which makes them a high-stakes surface where even subtle differences matter. In photos like these you're seeing the difference at its most direct. In a finished room, the distinction is there but not dramatic.
Color Details
Oslo Blue vs Rain Simulated Comparison
5 simulated room previews — drag the slider on each to see Oslo Blue on one side and Rain 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 Oslo Blue comparisons
See how Oslo Blue stacks up against other well-photographed colors across different brands and tones.
White Dove reflects far more light (LRV 83 vs 47), opening up a space where Oslo Blue encloses it.
A 5-point LRV gap (52 vs 47) makes Purbeck Stone the marginally brighter of the two.
At LRV 47 vs 30, Oslo Blue is decisively the brighter choice.
At LRV 60 vs 47, Agreeable Gray is decisively the brighter choice.
Accessible Beige reads slightly lighter (LRV 58 vs 47), a gap that shows most in low-lit rooms.
Oslo Blue reflects far more light (LRV 47 vs 27), opening up a space where Denim Drift encloses it.
A 4-point LRV gap (47 vs 43) makes Oslo Blue the marginally brighter of the two.
Tranquil Dawn reads slightly lighter (LRV 55 vs 47), a gap that shows most in low-lit rooms.
Oslo Blue reads slightly lighter (LRV 47 vs 44), a gap that shows most in low-lit rooms.
At LRV 84 vs 47, Pure White is decisively the brighter choice.
Balboa Mist reflects far more light (LRV 66 vs 47), opening up a space where Oslo Blue encloses it.
Shoji White reflects far more light (LRV 74 vs 47), opening up a space where Oslo Blue encloses it.
Oslo Blue reflects far more light (LRV 47 vs 12), opening up a space where Pewter Green encloses it.
Oslo Blue reflects far more light (LRV 47 vs 8), opening up a space where Duck Green encloses it.
Skimming Stone reflects far more light (LRV 68 vs 47), opening up a space where Oslo Blue encloses it.
Oslo Blue reflects far more light (LRV 47 vs 12), opening up a space where Vintage Vogue encloses it.
With LRVs of 47 and 45, the two reflect almost the same amount of light.
At LRV 47 vs 31, Oslo Blue is decisively the brighter choice.