Undine vs Aquastone
Where Undine belongs to Behr's range, Aquastone is a Sherwin-Williams color. These are both blues, so the question isn't which hue to choose — it's where within blue to land. Aquastone (LRV 49) reflects noticeably more light than Undine (LRV 43), a difference of 6 points that becomes especially apparent in rooms with limited natural light. Undine runs green and blue while Aquastone is decidedly cool, which means they'll respond very differently to warm vs cool light sources. The ΔE 5.0 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.
Color Details
Undine vs Aquastone Simulated Comparison
5 simulated room previews — drag the slider on each to see Undine on one side and Aquastone 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 Undine comparisons
See how Undine stacks up against other well-photographed colors across different brands and tones.
