Greyhound vs Warm Onyx
Greyhound and Warm Onyx come from the same Behr collection. Both sit in the grey family, which is useful context if you're narrowing within a single hue direction. The 14-point LRV gap — 21 for Greyhound vs 7 for Warm Onyx — means Greyhound will open up a space more effectively. Both share a red character, which means they'll respond to light and surrounding materials in similar ways. A ΔE of 21.4 puts these firmly in different territory — two distinct design choices rather than close alternatives. Below you'll find 1 real-room photo comparison where both colors appear side by side, plus 5 simulated room previews.
Greyhound vs Warm Onyx in Real Spaces
1 real room side by side. Seeing Greyhound and Warm Onyx in actual rooms makes the difference concrete; browse the spaces below to get a feel for how each color lives on a wall.
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. Greyhound returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
Color Details
Greyhound vs Warm Onyx Simulated Comparison
5 simulated room previews — drag the slider on each to see Greyhound on one side and Warm Onyx 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.