Poseidon vs M371
Poseidon is a Sherwin-Williams color while M371 comes from Tikkurila. Both sit in the blue family, which is useful context if you're narrowing within a single hue direction. At LRV 11 vs 6, Poseidon will read as the brighter of the two — a 5-point gap that matters most in north-facing or low-light rooms. At ΔE 5.2, the difference is perceptible but not dramatic — the two can work harmoniously in the same space. Below, 5 simulated room previews show how each color reads at scale — real-room photos will be added as they become available.
Color Details
Poseidon vs M371 Simulated Comparison
5 simulated room previews — drag the slider on each to see Poseidon on one side and M371 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 Poseidon comparisons
See how Poseidon stacks up against other well-photographed colors across different brands and tones.








































