Coastal Plain vs Obi Lilac
Both from Sherwin-Williams's palette. Coastal Plain reads as green-grey, while Obi Lilac reads as grey — two distinct hue families, not close cousins. They have nearly identical light reflectance values (37 vs 39), so they'll read as similarly Medium in most lighting conditions. Coastal Plain runs neutral while Obi Lilac is decidedly cool, which means they'll respond very differently to warm vs cool light sources. With a ΔE of 21.8, 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.
Coastal Plain vs Obi Lilac in Real Spaces
1 real room side by side. Seeing Coastal Plain and Obi Lilac 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. Obi Lilac brings more warmth to the space, while Coastal Plain keeps things cooler and crisper.
Color Details
Coastal Plain vs Obi Lilac Simulated Comparison
5 simulated room previews — drag the slider on each to see Coastal Plain on one side and Obi Lilac 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 Coastal Plain comparisons
See how Coastal Plain stacks up against other well-photographed colors across different brands and tones.
At LRV 83 vs 37, White Dove is decisively the brighter choice.
Ammonite reflects far more light (LRV 69 vs 37), opening up a space where Coastal Plain encloses it.
At LRV 37 vs 6, Coastal Plain is decisively the brighter choice.
Purbeck Stone reflects far more light (LRV 52 vs 37), opening up a space where Coastal Plain encloses it.
Coastal Plain reads slightly lighter (LRV 37 vs 30), a gap that shows most in low-lit rooms.
At LRV 52 vs 37, Mizzle is decisively the brighter choice.
Agreeable Gray reflects far more light (LRV 60 vs 37), opening up a space where Coastal Plain encloses it.
At LRV 58 vs 37, Accessible Beige is decisively the brighter choice.
A 10-point LRV gap (37 vs 27) makes Coastal Plain the marginally brighter of the two.
French Gray reads slightly lighter (LRV 43 vs 37), a gap that shows most in low-lit rooms.
Coastal Plain reflects far more light (LRV 37 vs 4), opening up a space where Naval encloses it.
At LRV 55 vs 37, Tranquil Dawn is decisively the brighter choice.
At LRV 37 vs 13, Coastal Plain is decisively the brighter choice.
A 7-point LRV gap (44 vs 37) makes Hardwick White the marginally brighter of the two.
Pure White reflects far more light (LRV 84 vs 37), opening up a space where Coastal Plain encloses it.
Coastal Plain reflects far more light (LRV 37 vs 21), opening up a space where Artichoke encloses it.
At LRV 66 vs 37, Balboa Mist is decisively the brighter choice.
At LRV 74 vs 37, Shoji White is decisively the brighter choice.
At LRV 83 vs 37, Snowbound is decisively the brighter choice.
At LRV 37 vs 12, Coastal Plain is decisively the brighter choice.
At LRV 68 vs 37, Skimming Stone is decisively the brighter choice.
Dix Blue reads slightly lighter (LRV 41 vs 37), a gap that shows most in low-lit rooms.
Calamine reflects far more light (LRV 68 vs 37), opening up a space where Coastal Plain encloses it.
Coastal Plain reads slightly lighter (LRV 37 vs 25), a gap that shows most in low-lit rooms.
At LRV 37 vs 12, Coastal Plain is decisively the brighter choice.
A 9-point LRV gap (45 vs 37) makes Saybrook Sage the marginally brighter of the two.
Coastal Plain reads slightly lighter (LRV 37 vs 31), a gap that shows most in low-lit rooms.
Coastal Plain reflects far more light (LRV 37 vs 7), opening up a space where Pine Needle encloses it.
Coastal Plain reflects far more light (LRV 37 vs 24), opening up a space where Cement grey encloses it.
Guilford Green reflects far more light (LRV 57 vs 37), opening up a space where Coastal Plain encloses it.