Oslo vs RAL 830-6
Oslo is a Jotun color while RAL 830-6 comes from RAL Effect. These are both blue-greys, so the question isn't which hue to choose — it's where within blue-grey to land. With LRVs of 11 and 11, they'll behave almost identically in terms of how much light they reflect back into a room. With a ΔE of 2.9, 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 vs RAL 830-6 in Real Spaces
1 real room side by side. Oslo and RAL 830-6 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.
Living Room
Living rooms test a color across a full range of conditions — morning sun, afternoon shade, and evening lamp light all shift how both of these read. 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 vs RAL 830-6 Simulated Comparison
5 simulated room previews — drag the slider on each to see Oslo on one side and RAL 830-6 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 comparisons
See how Oslo stacks up against other well-photographed colors across different brands and tones.
White Dove reflects far more light (LRV 83 vs 11), opening up a space where Oslo encloses it.
At LRV 52 vs 11, Purbeck Stone is decisively the brighter choice.
At LRV 30 vs 11, Evergreen Fog is decisively the brighter choice.
At LRV 60 vs 11, Agreeable Gray is decisively the brighter choice.
Accessible Beige reflects far more light (LRV 58 vs 11), opening up a space where Oslo encloses it.
Denim Drift reflects far more light (LRV 27 vs 11), opening up a space where Oslo encloses it.
At LRV 43 vs 11, French Gray is decisively the brighter choice.
Tranquil Dawn reflects far more light (LRV 55 vs 11), opening up a space where Oslo encloses it.
Hardwick White reflects far more light (LRV 44 vs 11), opening up a space where Oslo encloses it.
At LRV 84 vs 11, Pure White is decisively the brighter choice.
Balboa Mist reflects far more light (LRV 66 vs 11), opening up a space where Oslo encloses it.
Shoji White reflects far more light (LRV 74 vs 11), opening up a space where Oslo encloses it.
With LRVs of 12 and 11, the two reflect almost the same amount of light.
With LRVs of 11 and 8, the two reflect almost the same amount of light.
Skimming Stone reflects far more light (LRV 68 vs 11), opening up a space where Oslo encloses it.
With LRVs of 12 and 11, the two reflect almost the same amount of light.
Saybrook Sage reflects far more light (LRV 45 vs 11), opening up a space where Oslo encloses it.
At LRV 31 vs 11, Pale Green is decisively the brighter choice.