Black grey vs Iron grey
Both from RAL Classic's palette. These are both blue-greys, so the question isn't which hue to choose — it's where within blue-grey to land. Iron grey (LRV 12) reflects noticeably more light than Black grey (LRV 6), a difference of 6 points that becomes especially apparent in rooms with limited natural light. With a ΔE of 16.9, 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 Iron grey in Real Spaces
2 real rooms side by side. Seeing Black grey and Iron grey 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. Iron grey reads slightly lighter here — a subtle but real difference in how open the space feels.
Front Door
A front door is a focal point — small color differences read clearly at this concentrated scale. The brightness difference is modest but present — Iron grey gives the walls a little more lift.
Color Details
Black grey vs Iron grey Simulated Comparison
5 simulated room previews — drag the slider on each to see Black grey on one side and Iron grey 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.
