Blue Danube vs Black grey
Where Blue Danube belongs to Benjamin Moore's range, Black grey is a RAL Classic color. Blue Danube reads as blue, while Black grey reads as blue-grey — two distinct hue families, not close cousins. Blue Danube (LRV 11) reflects noticeably more light than Black grey (LRV 6), a difference of 5 points that becomes especially apparent in rooms with limited natural light. With a ΔE of 23.1, 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 3 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Blue Danube vs Black grey in Real Spaces
3 real rooms side by side. Seeing Blue Danube and Black grey in actual rooms makes the difference concrete; browse the spaces below to get a feel for how each color lives on a wall.
Living Room
In a living room, color works across both daylight and evening light — the same wall can read very differently at noon and at 8pm. The brightness difference is modest but present — Blue Danube gives the walls a little more lift.
Front Door
A front door is a focal point — small color differences read clearly at this concentrated scale. The brightness difference is modest but present — Blue Danube gives the walls a little more lift.
Kitchen Cabinets
Kitchen cabinets are constantly compared against adjacent materials, which means subtle differences between these two become much more visible. Blue Danube reads slightly lighter here — a subtle but real difference in how open the space feels.
Color Details
Blue Danube vs Black grey Simulated Comparison
5 simulated room previews — drag the slider on each to see Blue Danube on one side and Black 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 Blue Danube comparisons
See how Blue Danube stacks up against other well-photographed colors across different brands and tones.
