Cosmic Blue vs Gentle Aquamarine
Cosmic Blue (Behr) and Gentle Aquamarine (Sherwin-Williams) come from different manufacturers. These are both blues, so the question isn't which hue to choose — it's where within blue to land. The 7-point LRV gap — 54 for Gentle Aquamarine vs 47 for Cosmic Blue — means Gentle Aquamarine will open up a space more effectively. Where Cosmic Blue leans blue, Gentle Aquamarine reads cool — a distinction that shifts noticeably depending on the light source and surrounding finishes. A ΔE of 3.0 puts them in subtle territory — distinguishable in direct comparison, less so from across a room. Below, 5 simulated room previews show how each color reads at scale — real-room photos will be added as they become available.
Color Details
Cosmic Blue vs Gentle Aquamarine Simulated Comparison
5 simulated room previews — drag the slider on each to see Cosmic Blue on one side and Gentle Aquamarine 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 Cosmic Blue comparisons
See how Cosmic Blue stacks up against other well-photographed colors across different brands and tones.
