Iron Blue vs Before the Storm
Where Iron Blue belongs to Jotun's range, Before the Storm is a Sherwin-Williams color. Iron Blue reads as blue-grey, while Before the Storm reads as grey — two distinct hue families, not close cousins. They have nearly identical light reflectance values (18 vs 18), so they'll read as similarly Dark in most lighting conditions. Both lean neutral, so they'll behave similarly in mixed or changing light conditions. At ΔE 2.1, these are close — the kind of difference that matters when choosing between them, but doesn't read strongly in a finished room. Below, 5 simulated room previews show how each color reads at scale — real-room photos will be added as they become available.
Color Details
Iron Blue vs Before the Storm Simulated Comparison
5 simulated room previews — drag the slider on each to see Iron Blue on one side and Before the Storm 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 Blue comparisons
See how Iron Blue stacks up against other well-photographed colors across different brands and tones.
