Holly Glen vs Agate Grey
Where Holly Glen belongs to PPG's range, Agate Grey is a RAL Classic color. Holly Glen reads as blue-grey, while Agate Grey reads as green-grey — two distinct hue families, not close cousins. They have nearly identical light reflectance values (45 vs 45), so they'll read as similarly Medium in most lighting conditions. The ΔE 6.9 gap is real but not dramatic — close enough to use together, distinct enough to matter as a choice. Below, 5 simulated room previews show how each color reads at scale — real-room photos will be added as they become available.
Color Details
Holly Glen vs Agate Grey Simulated Comparison
5 simulated room previews — drag the slider on each to see Holly Glen on one side and Agate Grey 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 Holly Glen comparisons
See how Holly Glen stacks up against other well-photographed colors across different brands and tones.
