Warm Onyx vs Agreeable Gray
Warm Onyx (Behr) and Agreeable Gray (Sherwin-Williams) come from different manufacturers. Hue-wise, Warm Onyx belongs to the grey family and Agreeable Gray to the greige-grey family. The 53-point LRV gap — 60 for Agreeable Gray vs 7 for Warm Onyx — means Agreeable Gray will open up a space more effectively. Where Warm Onyx leans red, Agreeable Gray reads warm — a distinction that shifts noticeably depending on the light source and surrounding finishes. A ΔE of 51.1 puts these firmly in different territory — two distinct design choices rather than close alternatives. Below you'll find 2 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Warm Onyx vs Agreeable Gray in Real Spaces
2 real rooms side by side. Seeing Warm Onyx and Agreeable Gray 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
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. Agreeable Gray reflects noticeably more light off the walls, making the space read more open than Warm Onyx.
House
A full exterior is the most demanding test for a paint color — scale and outdoor light both amplify differences that seem small on a swatch. Agreeable Gray returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
Color Details
Warm Onyx vs Agreeable Gray Simulated Comparison
5 simulated room previews — drag the slider on each to see Warm Onyx on one side and Agreeable Gray 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.
