Ionian vs Plum Dandy

Ionian and Plum Dandy come from the same Sherwin-Williams collection. Hue-wise, Ionian belongs to the blue family and Plum Dandy to the grey family. The 3-point LRV gap — 20 for Ionian vs 17 for Plum Dandy — means Ionian will open up a space more effectively. Both share a cool character, which means they'll respond to light and surrounding materials in similar ways. A ΔE of 47.2 puts these firmly in different territory — two distinct design choices rather than close alternatives. Below, 5 simulated room previews show how each color reads at scale — real-room photos will be added as they become available.