St. Pauls Blue vs Mouse grey
Where St. Pauls Blue belongs to Jotun's range, Mouse grey is a RAL Classic color. Hue-wise, St. Pauls Blue belongs to the blue-grey family and Mouse grey to the grey family. They have nearly identical light reflectance values (17 vs 18), so they'll read as similarly Dark in most lighting conditions. The ΔE 5.0 gap is real but not dramatic — close enough to use together, distinct enough to matter as a choice. Below you'll find 2 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
St. Pauls Blue vs Mouse grey in Real Spaces
2 real rooms side by side. St. Pauls Blue 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. 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.
Kitchen
In a kitchen, colors are seen under bright task lighting that amplifies undertones — what reads neutral elsewhere can show its hand here. The distinction reads clearly at room scale, making the choice between them concrete.
Color Details
St. Pauls Blue vs Mouse grey Simulated Comparison
5 simulated room previews — drag the slider on each to see St. Pauls Blue 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 St. Pauls Blue comparisons
See how St. Pauls Blue stacks up against other well-photographed colors across different brands and tones.
