Warm Onyx vs Black Fox
Warm Onyx (Behr) and Black Fox (Sherwin-Williams) come from different manufacturers. Warm Onyx reads as grey, while Black Fox reads as greige-grey — two distinct hue families, not close cousins. Their light reflectance values are nearly the same — 7 vs 7 — so neither will read significantly brighter or darker than the other. Where Warm Onyx leans red, Black Fox reads warm — a distinction that shifts noticeably depending on the light source and surrounding finishes. A ΔE of 2.4 puts them in subtle territory — distinguishable in direct comparison, less so from across a 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 Black Fox in Real Spaces
2 real rooms side by side. Warm Onyx and Black Fox 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
A living room wall sees more varied light than almost any other surface in the house, which makes the choice between these two more nuanced than a chip suggests. Black Fox brings more warmth to the space, while Warm Onyx keeps things cooler and crisper.
Color Details
Warm Onyx vs Black Fox Simulated Comparison
5 simulated room previews — drag the slider on each to see Warm Onyx on one side and Black Fox 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.
