Conch Shell vs Perfect Periwinkle
Both from Sherwin-Williams's palette. Hue-wise, Conch Shell belongs to the beige family and Perfect Periwinkle to the blue family. Conch Shell (LRV 81) reflects noticeably more light than Perfect Periwinkle (LRV 23), a difference of 58 points that becomes especially apparent in rooms with limited natural light. Conch Shell runs warm while Perfect Periwinkle is decidedly cool, which means they'll respond very differently to warm vs cool light sources. With a ΔE of 51.2, 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 1 real-room photo comparison where both colors appear side by side, plus 5 simulated room previews.
Conch Shell vs Perfect Periwinkle in Real Spaces
1 real room side by side. Seeing Conch Shell and Perfect Periwinkle in actual rooms makes the difference concrete; browse the spaces below to get a feel for how each color lives on a wall.
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. Conch Shell reflects noticeably more light off the walls, making the space read more open than Perfect Periwinkle.
Color Details
Conch Shell vs Perfect Periwinkle Simulated Comparison
5 simulated room previews — drag the slider on each to see Conch Shell on one side and Perfect Periwinkle 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 Conch Shell comparisons
See how Conch Shell stacks up against other well-photographed colors across different brands and tones.
Conch Shell reflects far more light (LRV 81 vs 69), opening up a space where Ammonite encloses it.
Their light reflectance is nearly identical (LRV 83 vs 81), so neither reads brighter in a room.
At LRV 81 vs 6, Conch Shell is decisively the brighter choice.
Conch Shell reflects far more light (LRV 81 vs 52), opening up a space where Purbeck Stone encloses it.
Conch Shell reflects far more light (LRV 81 vs 30), opening up a space where Evergreen Fog encloses it.
At LRV 81 vs 52, Conch Shell is decisively the brighter choice.
Conch Shell reflects far more light (LRV 81 vs 60), opening up a space where Agreeable Gray encloses it.
At LRV 81 vs 58, Conch Shell is decisively the brighter choice.
At LRV 81 vs 27, Conch Shell is decisively the brighter choice.
Conch Shell reflects far more light (LRV 81 vs 43), opening up a space where French Gray encloses it.
Conch Shell reflects far more light (LRV 81 vs 4), opening up a space where Naval encloses it.
At LRV 81 vs 55, Conch Shell is decisively the brighter choice.
At LRV 81 vs 13, Conch Shell is decisively the brighter choice.
At LRV 81 vs 44, Conch Shell is decisively the brighter choice.
With LRVs of 84 and 81, the two reflect almost the same amount of light.
Conch Shell reflects far more light (LRV 81 vs 21), opening up a space where Artichoke encloses it.
At LRV 81 vs 66, Conch Shell is decisively the brighter choice.
A 7-point LRV gap (81 vs 74) makes Conch Shell the marginally brighter of the two.
Their light reflectance is nearly identical (LRV 83 vs 81), so neither reads brighter in a room.
Conch Shell reflects far more light (LRV 81 vs 51), opening up a space where Pigeon encloses it.
At LRV 81 vs 12, Conch Shell is decisively the brighter choice.
At LRV 81 vs 8, Conch Shell is decisively the brighter choice.
At LRV 81 vs 68, Conch Shell is decisively the brighter choice.
Conch Shell reflects far more light (LRV 81 vs 41), opening up a space where Dix Blue encloses it.
At LRV 81 vs 12, Conch Shell is decisively the brighter choice.
At LRV 81 vs 45, Conch Shell is decisively the brighter choice.
Conch Shell reflects far more light (LRV 81 vs 31), opening up a space where Pale Green encloses it.