St. John Blue vs Tranquil Aqua
Where St. John Blue belongs to Benjamin Moore's range, Tranquil Aqua is a Sherwin-Williams color. Both sit in the blue family, which is useful context if you're narrowing within a single hue direction. St. John Blue (LRV 34) reflects noticeably more light than Tranquil Aqua (LRV 30), a difference of 4 points that becomes especially apparent in rooms with limited natural light. St. John Blue runs blue while Tranquil Aqua is decidedly cool, which means they'll respond very differently to warm vs cool light sources. At ΔE 2.6, these are close — the kind of difference that matters when choosing between them, but doesn't read strongly in a finished 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
St. John Blue vs Tranquil Aqua Simulated Comparison
5 simulated room previews — drag the slider on each to see St. John Blue on one side and Tranquil Aqua 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 St. John Blue comparisons
See how St. John Blue stacks up against other well-photographed colors across different brands and tones.
