Black grey vs Perfect Periwinkle
Black grey (RAL Classic) and Perfect Periwinkle (Sherwin-Williams) come from different manufacturers. Hue-wise, Black grey belongs to the blue-grey family and Perfect Periwinkle to the blue family. The 17-point LRV gap — 23 for Perfect Periwinkle vs 6 for Black grey — means Perfect Periwinkle will open up a space more effectively. A ΔE of 42.0 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 Perfect Periwinkle in Real Spaces
1 real room side by side. Seeing Black grey and Perfect Periwinkle 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. Perfect Periwinkle 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 Perfect Periwinkle Simulated Comparison
5 simulated room previews — drag the slider on each to see Black grey on one side and Perfect Periwinkle 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.
