Black grey vs RAL 770-5
Black grey (RAL Classic) and RAL 770-5 (RAL Effect) come from different manufacturers. Black grey reads as blue-grey, while RAL 770-5 reads as greige-grey — two distinct hue families, not close cousins. The 36-point LRV gap — 43 for RAL 770-5 vs 6 for Black grey — means RAL 770-5 will open up a space more effectively. A ΔE of 52.0 puts these firmly in different territory — two distinct design choices rather than close alternatives. 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 770-5 in Real Spaces
1 real room side by side. Seeing Black grey and RAL 770-5 in actual rooms makes the difference concrete; browse the spaces below to get a feel for how each color lives on a wall.
House
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. RAL 770-5 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 grey vs RAL 770-5 Simulated Comparison
5 simulated room previews — drag the slider on each to see Black grey on one side and RAL 770-5 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.
