Black grey vs Rapture Blue
Where Black grey belongs to RAL Classic's range, Rapture Blue is a Sherwin-Williams color. Black grey reads as blue-grey, while Rapture Blue reads as blue — two distinct hue families, not close cousins. Rapture Blue (LRV 47) reflects noticeably more light than Black grey (LRV 6), a difference of 40 points that becomes especially apparent in rooms with limited natural light. With a ΔE of 57.4, 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 Rapture Blue in Real Spaces
2 real rooms side by side. Seeing Black grey and Rapture Blue 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. Rapture Blue reflects noticeably more light off the walls, making the space read more open than Black grey.
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 Rapture Blue will make the room feel meaningfully brighter than Black grey would.
Color Details
Black grey vs Rapture Blue Simulated Comparison
5 simulated room previews — drag the slider on each to see Black grey on one side and Rapture Blue 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.
