Blue Dusk vs Grey Blue
Blue Dusk (Benjamin Moore) and Grey Blue (RAL Classic) come from different manufacturers. These are both blue-greys, so the question isn't which hue to choose — it's where within blue-grey to land. The 17-point LRV gap — 24 for Blue Dusk vs 7 for Grey Blue — means Blue Dusk will open up a space more effectively. A ΔE of 23.6 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.
Blue Dusk vs Grey Blue in Real Spaces
1 real room side by side. Seeing Blue Dusk and Grey Blue in actual rooms makes the difference concrete; browse the spaces below to get a feel for how each color lives on a wall.
Bedroom
Bedrooms are typically lit with warmer, lower light than the rest of the house — a condition that flatters warm tones and deepens cool ones. Blue Dusk returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
Color Details
Blue Dusk vs Grey Blue Simulated Comparison
5 simulated room previews — drag the slider on each to see Blue Dusk 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 Blue Dusk comparisons
See how Blue Dusk stacks up against other well-photographed colors across different brands and tones.
