Poseidon vs Pure White
Both from Sherwin-Williams's palette. Hue-wise, Poseidon belongs to the blue family and Pure White to the beige-greige family. Pure White (LRV 84) reflects noticeably more light than Poseidon (LRV 11), a difference of 73 points that becomes especially apparent in rooms with limited natural light. Poseidon runs cool while Pure White is decidedly warm, which means they'll respond very differently to warm vs cool light sources. With a ΔE of 60.1, the contrast is hard to miss. These aren't variations on a theme — they're two different answers to the same question. Below you'll find 2 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Poseidon vs Pure White in Real Spaces
2 real rooms side by side. Seeing Poseidon and Pure White 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 are one of the few spaces where you're genuinely enclosed by the paint color, which makes the choice between these two more consequential. Pure White reflects noticeably more light off the walls, making the space read more open than Poseidon.
House
Seen across an entire facade, subtle tonal differences become pronounced. What reads as nearly the same on a chip often reads as clearly different at scale. Pure White reflects noticeably more light off the walls, making the space read more open than Poseidon.
Color Details
Poseidon vs Pure White Simulated Comparison
5 simulated room previews — drag the slider on each to see Poseidon on one side and Pure White 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.
White Dove reflects far more light (LRV 83 vs 11), opening up a space where Poseidon encloses it.
At LRV 52 vs 11, Purbeck Stone is decisively the brighter choice.
At LRV 30 vs 11, Evergreen Fog is decisively the brighter choice.
At LRV 60 vs 11, Agreeable Gray is decisively the brighter choice.
Accessible Beige reflects far more light (LRV 58 vs 11), opening up a space where Poseidon encloses it.
Denim Drift reflects far more light (LRV 27 vs 11), opening up a space where Poseidon encloses it.
At LRV 43 vs 11, French Gray is decisively the brighter choice.
Tranquil Dawn reflects far more light (LRV 55 vs 11), opening up a space where Poseidon encloses it.
Hardwick White reflects far more light (LRV 44 vs 11), opening up a space where Poseidon encloses it.
Balboa Mist reflects far more light (LRV 66 vs 11), opening up a space where Poseidon encloses it.
Shoji White reflects far more light (LRV 74 vs 11), opening up a space where Poseidon encloses it.
With LRVs of 12 and 11, the two reflect almost the same amount of light.
Poseidon reads slightly lighter (LRV 11 vs 8), a gap that shows most in low-lit rooms.
Skimming Stone reflects far more light (LRV 68 vs 11), opening up a space where Poseidon encloses it.
With LRVs of 12 and 11, the two reflect almost the same amount of light.
Saybrook Sage reflects far more light (LRV 45 vs 11), opening up a space where Poseidon encloses it.
At LRV 31 vs 11, Pale Green is decisively the brighter choice.
A 4-point LRV gap (11 vs 7) makes Poseidon the marginally brighter of the two.