Mountain Stream vs Tranquil Aqua

Mountain Stream and Tranquil Aqua come from the same Sherwin-Williams collection. These are both blues, so the question isn't which hue to choose — it's where within blue to land. The 5-point LRV gap — 30 for Tranquil Aqua vs 25 for Mountain Stream — means Tranquil Aqua 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. ΔE 5.7 means they're clearly different, but not dramatically so — they'd pair well in the same room. Below, 5 simulated room previews show how each color reads at scale — real-room photos will be added as they become available.