Blackout vs Grey Blue
Blackout is a Behr color while Grey Blue comes from RAL Classic. Blackout reads as grey, while Grey Blue reads as blue-grey — two distinct hue families, not close cousins. With LRVs of 6 and 7, they'll behave almost identically in terms of how much light they reflect back into a room. At ΔE 9.3, 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.
Blackout vs Grey Blue in Real Spaces
2 real rooms side by side. Blackout 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.
House
At full exterior scale, the difference between these two colors becomes much easier to judge than from a small 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.
Color Details
Blackout vs Grey Blue Simulated Comparison
5 simulated room previews — drag the slider on each to see Blackout 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 Blackout comparisons
See how Blackout stacks up against other well-photographed colors across different brands and tones.
