Ionian vs Lucky Green

Both from Sherwin-Williams's palette. Ionian reads as blue, while Lucky Green reads as green — two distinct hue families, not close cousins. They have nearly identical light reflectance values (20 vs 18), so they'll read as similarly Medium in most lighting conditions. Both lean cool, so they'll behave similarly in mixed or changing light conditions. With a ΔE of 20.6, 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.