Cool Gray vs Flagstone

Both from PPG's palette. Cool Gray reads as blue-grey, while Flagstone reads as grey — two distinct hue families, not close cousins. Cool Gray (LRV 60) reflects noticeably more light than Flagstone (LRV 41), a difference of 19 points that becomes especially apparent in rooms with limited natural light. With a ΔE of 13.5, the contrast is hard to miss. These aren't variations on a theme — they're two different answers to the same question. Below, 5 simulated room previews show how each color reads at scale — real-room photos will be added as they become available.