Black grey vs RAL 640-2
Where Black grey belongs to RAL Classic's range, RAL 640-2 is a RAL Effect color. Black grey reads as blue-grey, while RAL 640-2 reads as blue — two distinct hue families, not close cousins. RAL 640-2 (LRV 13) reflects noticeably more light than Black grey (LRV 6), a difference of 6 points that becomes especially apparent in rooms with limited natural light. With a ΔE of 46.4, 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 grey vs RAL 640-2 Simulated Comparison
5 simulated room previews — drag the slider on each to see Black grey on one side and RAL 640-2 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 grey comparisons
See how Black grey stacks up against other well-photographed colors across different brands and tones.
