Iron Grey vs S 3005-G20Y
Where Iron Grey belongs to Jotun's range, S 3005-G20Y is a NCS color. These are both greys, so the question isn't which hue to choose — it's where within grey to land. They have nearly identical light reflectance values (39 vs 40), so they'll read as similarly Medium in most lighting conditions. Both lean neutral, so they'll behave similarly in mixed or changing light conditions. The ΔE 3.3 gap is real but not dramatic — close enough to use together, distinct enough to matter as a choice. Below you'll find 1 real-room photo comparison where both colors appear side by side, plus 5 simulated room previews.
Iron Grey vs S 3005-G20Y in Real Spaces
1 real room side by side. Iron Grey and S 3005-G20Y 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
In a living room, color works across both daylight and evening light — the same wall can read very differently at noon and at 8pm. Side by side like this, the difference is easy to read — which is exactly why seeing them in a real space is more useful than comparing chips.
Color Details
Iron Grey vs S 3005-G20Y Simulated Comparison
5 simulated room previews — drag the slider on each to see Iron Grey on one side and S 3005-G20Y 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 Iron Grey comparisons
See how Iron Grey stacks up against other well-photographed colors across different brands and tones.
