Oslo vs Black grey
Oslo (Jotun) and Black grey (RAL Classic) come from different manufacturers. Both sit in the blue-grey family, which is useful context if you're narrowing within a single hue direction. The 4-point LRV gap — 11 for Oslo vs 6 for Black grey — means Oslo will open up a space more effectively. A ΔE of 19.6 puts these firmly in different territory — two distinct design choices rather than close alternatives. Below you'll find 1 real-room photo comparison where both colors appear side by side, plus 5 simulated room previews.
Oslo vs Black grey in Real Spaces
1 real room side by side. Seeing Oslo and Black grey in actual rooms makes the difference concrete; browse the spaces below to get a feel for how each color lives on a wall.
Living Room
A living room wall sees more varied light than almost any other surface in the house, which makes the choice between these two more nuanced than a chip suggests. Oslo reads slightly lighter here — a subtle but real difference in how open the space feels.
Color Details
Oslo vs Black grey Simulated Comparison
5 simulated room previews — drag the slider on each to see Oslo on one side and Black grey 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.
