Cornwall Slate vs Frosted Fern
Cornwall Slate and Frosted Fern come from the same Sherwin-Williams collection. Hue-wise, Cornwall Slate belongs to the grey family and Frosted Fern to the greige-grey family. The 9-point LRV gap — 38 for Frosted Fern vs 29 for Cornwall Slate — means Frosted Fern will open up a space more effectively. Both share a neutral character, which means they'll respond to light and surrounding materials in similar ways. ΔE 7.5 means they're clearly different, but not dramatically so — they'd pair well in the same room. Below you'll find 2 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.
Cornwall Slate vs Frosted Fern in Real Spaces
2 real rooms side by side. Cornwall Slate and Frosted Fern are close enough that the difference can be hard to judge from a chip alone — these photos show how each reads at scale, across different spaces and lighting conditions.
Living Room
A living room wall sees more varied light than almost any other surface in the house, which makes the choice between these two more nuanced than a chip suggests. Frosted Fern reflects noticeably more light off the walls, making the space read more open than Cornwall Slate.
Bedroom
Bedrooms are typically lit with warmer, lower light than the rest of the house — a condition that flatters warm tones and deepens cool ones. Frosted Fern returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
Color Details
Cornwall Slate vs Frosted Fern Simulated Comparison
5 simulated room previews — drag the slider on each to see Cornwall Slate on one side and Frosted Fern 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 Cornwall Slate comparisons
See how Cornwall Slate stacks up against other well-photographed colors across different brands and tones.
Ammonite reflects far more light (LRV 69 vs 29), opening up a space where Cornwall Slate encloses it.
At LRV 83 vs 29, White Dove is decisively the brighter choice.
At LRV 29 vs 6, Cornwall Slate is decisively the brighter choice.
Purbeck Stone reflects far more light (LRV 52 vs 29), opening up a space where Cornwall Slate encloses it.
With LRVs of 30 and 29, the two reflect almost the same amount of light.
At LRV 52 vs 29, Mizzle is decisively the brighter choice.
Agreeable Gray reflects far more light (LRV 60 vs 29), opening up a space where Cornwall Slate encloses it.
At LRV 58 vs 29, Accessible Beige is decisively the brighter choice.
Their light reflectance is nearly identical (LRV 29 vs 27), so neither reads brighter in a room.
French Gray reflects far more light (LRV 43 vs 29), opening up a space where Cornwall Slate encloses it.
Cornwall Slate reflects far more light (LRV 29 vs 4), opening up a space where Naval encloses it.
At LRV 55 vs 29, Tranquil Dawn is decisively the brighter choice.
At LRV 29 vs 13, Cornwall Slate is decisively the brighter choice.
At LRV 44 vs 29, Hardwick White is decisively the brighter choice.
Pure White reflects far more light (LRV 84 vs 29), opening up a space where Cornwall Slate encloses it.
Cornwall Slate reads slightly lighter (LRV 29 vs 21), a gap that shows most in low-lit rooms.
At LRV 66 vs 29, Balboa Mist is decisively the brighter choice.
At LRV 74 vs 29, Shoji White is decisively the brighter choice.
At LRV 83 vs 29, Snowbound is decisively the brighter choice.
Pigeon reflects far more light (LRV 51 vs 29), opening up a space where Cornwall Slate encloses it.
At LRV 29 vs 12, Cornwall Slate is decisively the brighter choice.
At LRV 29 vs 8, Cornwall Slate is decisively the brighter choice.
At LRV 68 vs 29, Skimming Stone is decisively the brighter choice.
Dix Blue reads slightly lighter (LRV 41 vs 29), a gap that shows most in low-lit rooms.
At LRV 29 vs 12, Cornwall Slate is decisively the brighter choice.
At LRV 45 vs 29, Saybrook Sage is decisively the brighter choice.
With LRVs of 31 and 29, the two reflect almost the same amount of light.