Black blue vs Olive grey
Black blue and Olive grey come from the same RAL Classic collection. Black blue reads as blue, while Olive grey reads as greige-grey — two distinct hue families, not close cousins. The 18-point LRV gap — 22 for Olive grey vs 5 for Black blue — means Olive grey will open up a space more effectively. A ΔE of 44.4 puts these firmly in different territory — two distinct design choices rather than close alternatives. Below you'll find 3 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Black blue vs Olive grey in Real Spaces
3 real rooms side by side. Seeing Black blue and Olive grey in actual rooms makes the difference concrete; browse the spaces below to get a feel for how each color lives on a wall.
House
A full exterior is the most demanding test for a paint color — scale and outdoor light both amplify differences that seem small on a swatch. Olive grey returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
Front Door
On a front door, the color is both the first and last thing you see — a context where even a modest tonal difference reads clearly. Olive grey reflects noticeably more light off the walls, making the space read more open than Black blue.
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. Olive grey returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
Color Details
Black blue vs Olive grey Simulated Comparison
5 simulated room previews — drag the slider on each to see Black blue on one side and Olive 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 Black blue comparisons
See how Black blue stacks up against other well-photographed colors across different brands and tones.
