Pewter Cast vs Poseidon
Both are Sherwin-Williams colors. Pewter Cast reads as grey, while Poseidon reads as blue — two distinct hue families, not close cousins. At LRV 31 vs 11, Pewter Cast will read as the brighter of the two — a 20-point gap that matters most in north-facing or low-light rooms. The tonal difference — Pewter Cast's neutral character against Poseidon's cool — becomes most visible against white trim or in morning light. At ΔE 37.4, these are genuinely distinct colors — a strong contrast if used together, or a meaningful choice between two different directions. Below you'll find 2 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Pewter Cast vs Poseidon in Real Spaces
2 real rooms side by side. Seeing Pewter Cast and Poseidon in actual rooms makes the difference concrete; browse the spaces below to get a feel for how each color lives on a wall.
Bathroom
Bathrooms amplify color — the enclosed space and reflective surfaces make what reads subtle elsewhere feel more present here. The LRV gap is large enough that Pewter Cast will make the room feel meaningfully brighter than Poseidon would.
House
At full exterior scale, the difference between these two colors becomes much easier to judge than from a small chip. The LRV gap is large enough that Pewter Cast will make the room feel meaningfully brighter than Poseidon would.
Color Details
Pewter Cast vs Poseidon Simulated Comparison
5 simulated room previews — drag the slider on each to see Pewter Cast on one side and Poseidon 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.