Comparison

Grays Harbor vs Thunderstorm

Sherwin-Williams SW 6236 and Vista Paint 0514, ΔE 2.51 apart

Sherwin-Williams Grays Harbor SW 6236 on a wall, hex #596368
Grays Harbor Sherwin-Williams SW 6236
Vista Paint Thunderstorm 0514 on a wall, hex #5D636B
Thunderstorm Vista Paint 0514
Zeytin’s verdict · ΔE 2.51Close cousins. Paint a sample of each before you choose.

Sherwin-Williams Grays Harbor (SW 6236) and Vista Paint Thunderstorm (0514) measure a delta-E of 2.51 apart. They sit within 0.9 LRV points of each other, so neither will look brighter than the other on the same wall. Both carry a similar amount of color, at chroma 4.9 and 5.3. Close, but a large sample of each will show the gap, particularly against white trim. If you need the Grays Harbor depth in Vista Paint's line, start from its LRV of 12.1 rather than matching by name.

Is Sherwin-Williams Grays Harbor the same color as Vista Paint Thunderstorm?

Not quite, but close - Sherwin-Williams Grays Harbor and Vista Paint Thunderstorm are delta-E 2.51 apart, close enough that most rooms would not show the difference.

What is the delta-E between Sherwin-Williams Grays Harbor and Vista Paint Thunderstorm?

The measured color distance between Sherwin-Williams Grays Harbor and Vista Paint Thunderstorm is delta-E 2.51.

CLOSEST PAIRΔE 2.51 Grays Harbor and Thunderstorm
LIGHTESTThunderstorm LRV 13.0
DARKESTGrays Harbor LRV 12.1
SPREAD0.9LRV points

Side by side

measured values
Grays Harbor Thunderstorm
Brand Sherwin-Williams Vista Paint
Code SW 6236 0514
Hex #596368 #5D636B
Light reflectance 12.1 13.0
Undertone blue cast blue cast
Chroma 4.9 5.3
Hue angle 237.0° 264.5°
Color family gray gray

Each on its own

full detail