Cay vs Quench Blue
Both from Sherwin-Williams's palette. These are both blues, so the question isn't which hue to choose — it's where within blue to land. Quench Blue (LRV 69) reflects noticeably more light than Cay (LRV 58), a difference of 10 points that becomes especially apparent in rooms with limited natural light. Both lean cool, so they'll behave similarly in mixed or changing light conditions. The ΔE 5.7 gap is real but not dramatic — close enough to use together, distinct enough to matter as a choice. Below you'll find 1 real-room photo comparison where both colors appear side by side, plus 5 simulated room previews.
Cay vs Quench Blue in Real Spaces
1 real room side by side. Cay and Quench Blue are close enough that the difference can be hard to judge from a chip alone — these photos show how each reads at scale, across different spaces and lighting conditions.
Bathroom
Bathrooms are one of the few spaces where you're genuinely enclosed by the paint color, which makes the choice between these two more consequential. Quench Blue reflects noticeably more light off the walls, making the space read more open than Cay.
Color Details
Cay vs Quench Blue Simulated Comparison
5 simulated room previews — drag the slider on each to see Cay on one side and Quench Blue 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.