Oslo vs Iron grey
Oslo is a Jotun color while Iron grey comes from RAL Classic. 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 12, they'll behave almost identically in terms of how much light they reflect back into a room. At ΔE 3.6, the difference is perceptible but not dramatic — the two can work harmoniously in the same space. Below, 5 simulated room previews show how each color reads at scale — real-room photos will be added as they become available.
Color Details
Oslo vs Iron grey Simulated Comparison
5 simulated room previews — drag the slider on each to see Oslo on one side and Iron 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.
