Sea Emerald vs Ionian
Sea Emerald (Jotun) and Ionian (Sherwin-Williams) come from different manufacturers. Sea Emerald reads as blue-grey, while Ionian reads as blue — two distinct hue families, not close cousins. The 6-point LRV gap — 26 for Sea Emerald vs 20 for Ionian — means Sea Emerald 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 19.6 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.
Color Details
Sea Emerald vs Ionian Simulated Comparison
5 simulated room previews — drag the slider on each to see Sea Emerald on one side and Ionian 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 Sea Emerald comparisons
See how Sea Emerald stacks up against other well-photographed colors across different brands and tones.
