Warm Onyx vs Blackened Black
Where Warm Onyx belongs to Behr's range, Blackened Black is a Jotun color. Both sit in the grey family, which is useful context if you're narrowing within a single hue direction. They have nearly identical light reflectance values (7 vs 7), so they'll read as similarly Dark in most lighting conditions. Warm Onyx runs red while Blackened Black is decidedly neutral, which means they'll respond very differently to warm vs cool light sources. At ΔE 2.2, these are close — the kind of difference that matters when choosing between them, but doesn't read strongly in a finished room. Below you'll find 2 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Warm Onyx vs Blackened Black in Real Spaces
2 real rooms side by side. Warm Onyx and Blackened Black are close enough that the difference can be hard to judge from a chip alone — these photos show how each reads at scale, across different spaces and lighting conditions.
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 two are close enough that the choice comes down to finer qualities — undertone, texture, what the color sits next to.
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. At this scale the difference is subtle — you'd need them side by side, as shown here, to reliably tell them apart.
Color Details
Warm Onyx vs Blackened Black Simulated Comparison
5 simulated room previews — drag the slider on each to see Warm Onyx on one side and Blackened Black 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 Warm Onyx comparisons
See how Warm Onyx stacks up against other well-photographed colors across different brands and tones.
