Black blue vs Pearl mouse grey
Both from RAL Classic's palette. Hue-wise, Black blue belongs to the blue family and Pearl mouse grey to the grey family. Pearl mouse grey (LRV 34) reflects noticeably more light than Black blue (LRV 5), a difference of 29 points that becomes especially apparent in rooms with limited natural light. With a ΔE of 42.7, the contrast is hard to miss. These aren't variations on a theme — they're two different answers to the same question. Below you'll find 1 real-room photo comparison where both colors appear side by side, plus 5 simulated room previews.
Black blue vs Pearl mouse grey in Real Spaces
1 real room side by side. Seeing Black blue and Pearl mouse grey in actual rooms makes the difference concrete; browse the spaces below to get a feel for how each color lives on a wall.
Front Door
A front door is a focal point — small color differences read clearly at this concentrated scale. The LRV gap is large enough that Pearl mouse grey will make the room feel meaningfully brighter than Black blue would.
Color Details
Black blue vs Pearl mouse grey Simulated Comparison
5 simulated room previews — drag the slider on each to see Black blue on one side and Pearl 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 Black blue comparisons
See how Black blue stacks up against other well-photographed colors across different brands and tones.
