Black blue vs Grey olive
Both from RAL Classic's palette. Black blue reads as blue, while Grey olive reads as greige-grey — two distinct hue families, not close cousins. Grey olive (LRV 8) reflects noticeably more light than Black blue (LRV 5), a difference of 3 points that becomes especially apparent in rooms with limited natural light. With a ΔE of 19.6, the contrast is hard to miss. These aren't variations on a theme — they're two different answers to the same question. Below, 5 simulated room previews show how each color reads at scale — real-room photos will be added as they become available.
Color Details
Black blue vs Grey olive Simulated Comparison
5 simulated room previews — drag the slider on each to see Black blue on one side and Grey olive 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.







































