Breton Blue vs Quartz grey
Breton Blue (Dulux) and Quartz grey (RAL Classic) come from different manufacturers. Hue-wise, Breton Blue belongs to the blue family and Quartz grey to the grey family. The 7-point LRV gap — 17 for Quartz grey vs 10 for Breton Blue — means Quartz grey will open up a space more effectively. A ΔE of 19.5 puts these firmly in different territory — two distinct design choices rather than close alternatives. Below you'll find 1 real-room photo comparison where both colors appear side by side, plus 5 simulated room previews.
Breton Blue vs Quartz grey in Real Spaces
1 real room side by side. Seeing Breton Blue and Quartz grey in actual rooms makes the difference concrete; browse the spaces below to get a feel for how each color lives on a wall.
Kitchen Cabinets
Cabinet color is always seen in context — against countertops, backsplash, and hardware — which amplifies undertone differences that might disappear on a plain wall. Quartz grey has the edge in reflectance, which shows as a quiet sense of added space rather than an obvious contrast.
Color Details
Breton Blue vs Quartz grey Simulated Comparison
5 simulated room previews — drag the slider on each to see Breton Blue on one side and Quartz 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 Breton Blue comparisons
See how Breton Blue stacks up against other well-photographed colors across different brands and tones.
