Black grey vs Hep Green
Where Black grey belongs to RAL Classic's range, Hep Green is a Sherwin-Williams color. Hue-wise, Black grey belongs to the blue-grey family and Hep Green to the beige-green family. Hep Green (LRV 44) reflects noticeably more light than Black grey (LRV 6), a difference of 37 points that becomes especially apparent in rooms with limited natural light. With a ΔE of 77.0, 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 2 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Black grey vs Hep Green in Real Spaces
2 real rooms side by side. Seeing Black grey and Hep Green in actual rooms makes the difference concrete; browse the spaces below to get a feel for how each color lives on a wall.
Living Room
In a living room, color works across both daylight and evening light — the same wall can read very differently at noon and at 8pm. The LRV gap is large enough that Hep Green will make the room feel meaningfully brighter than Black grey would.
Front Door
A front door is a focal point — small color differences read clearly at this concentrated scale. The LRV gap is large enough that Hep Green will make the room feel meaningfully brighter than Black grey would.
Color Details
Black grey vs Hep Green Simulated Comparison
5 simulated room previews — drag the slider on each to see Black grey on one side and Hep Green 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.
