Porpoise vs Storm Warning

Both from Sherwin-Williams's palette. Hue-wise, Porpoise belongs to the greige-grey family and Storm Warning to the grey family. They have nearly identical light reflectance values (13 vs 14), so they'll read as similarly Dark in most lighting conditions. Porpoise runs warm while Storm Warning is decidedly neutral, which means they'll respond very differently to warm vs cool light sources. The ΔE 3.8 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.