Breton Blue vs Grey Blue
Breton Blue is a Dulux color while Grey Blue comes from RAL Classic. Hue-wise, Breton Blue belongs to the blue family and Grey Blue to the blue-grey family. At LRV 10 vs 7, Breton Blue will read as the brighter of the two — a 3-point gap that matters most in north-facing or low-light rooms. At ΔE 6.5, the difference is perceptible but not dramatic — the two can work harmoniously in the same space. Below you'll find 2 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Breton Blue vs Grey Blue in Real Spaces
2 real rooms side by side. Breton Blue and Grey Blue 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.
Bedroom
Bedroom walls are often seen under warm artificial light, a context that shifts both colors from how they look on a chip. 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 Cabinets
On cabinetry, undertone and temperature become more pronounced against countertops and hardware. 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.
Color Details
Breton Blue vs Grey Blue Simulated Comparison
5 simulated room previews — drag the slider on each to see Breton Blue on one side and Grey Blue 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.
