Agate Grey vs Halcyon Green
Agate Grey is a RAL Classic color while Halcyon Green comes from Sherwin-Williams. Both sit in the green-grey family, which is useful context if you're narrowing within a single hue direction. At LRV 45 vs 38, Agate Grey will read as the brighter of the two — a 7-point gap that matters most in north-facing or low-light rooms. At ΔE 6.4, the difference is perceptible but not dramatic — the two can work harmoniously in the same space. Below you'll find 1 real-room photo comparison where both colors appear side by side, plus 5 simulated room previews.
Agate Grey vs Halcyon Green in Real Spaces
1 real room side by side. Agate Grey and Halcyon Green 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.
Kitchen Cabinets
On cabinetry, undertone and temperature become more pronounced against countertops and hardware. The brightness difference is modest but present — Agate Grey gives the walls a little more lift.
Color Details
Agate Grey vs Halcyon Green Simulated Comparison
5 simulated room previews — drag the slider on each to see Agate Grey on one side and Halcyon Green 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 Agate Grey comparisons
See how Agate Grey stacks up against other well-photographed colors across different brands and tones.
