Fahm vs Mouse grey
Where Fahm belongs to Jotun's range, Mouse grey is a RAL Classic color. These are both greys, so the question isn't which hue to choose — it's where within grey to land. Mouse grey (LRV 18) reflects noticeably more light than Fahm (LRV 14), a difference of 4 points that becomes especially apparent in rooms with limited natural light. At ΔE 2.2, these are close — the kind of difference that matters when choosing between them, but doesn't read strongly in a finished room. Below you'll find 2 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Fahm vs Mouse grey in Real Spaces
2 real rooms side by side. Fahm and Mouse grey 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. The brightness difference is modest but present — Mouse grey gives the walls a little more lift.
Kitchen
In a kitchen, colors are seen under bright task lighting that amplifies undertones — what reads neutral elsewhere can show its hand here. Mouse grey reads slightly lighter here — a subtle but real difference in how open the space feels.
Color Details
Fahm vs Mouse grey Simulated Comparison
5 simulated room previews — drag the slider on each to see Fahm on one side and Mouse 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 Fahm comparisons
See how Fahm stacks up against other well-photographed colors across different brands and tones.
