Black grey vs RAL 620-5
Where Black grey belongs to RAL Classic's range, RAL 620-5 is a RAL Effect color. Black grey reads as blue-grey, while RAL 620-5 reads as blue — two distinct hue families, not close cousins. They have nearly identical light reflectance values (6 vs 4), so they'll read as similarly Dark in most lighting conditions. With a ΔE of 15.6, 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 1 real-room photo comparison where both colors appear side by side, plus 5 simulated room previews.
Black grey vs RAL 620-5 in Real Spaces
1 real room side by side. Seeing Black grey and RAL 620-5 in actual rooms makes the difference concrete; browse the spaces below to get a feel for how each color lives on a wall.
House
Seen across an entire facade, subtle tonal differences become pronounced. What reads as nearly the same on a chip often reads as clearly different at scale. The distinction reads clearly at room scale, making the choice between them concrete.
Color Details
Black grey vs RAL 620-5 Simulated Comparison
5 simulated room previews — drag the slider on each to see Black grey on one side and RAL 620-5 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.
