Comparison

Smoky Blue vs Winter Harbor

Sherwin-Williams SW 7604 and Vista Paint H0051, ΔE 2.17 apart

Sherwin-Williams Smoky Blue SW 7604 on a wall, hex #596E79
Smoky Blue Sherwin-Williams SW 7604
Vista Paint Winter Harbor H0051 on a wall, hex #5F737D
Winter Harbor Vista Paint H0051
Zeytin’s verdict · ΔE 2.17Close cousins. Paint a sample of each before you choose.

Sherwin-Williams Smoky Blue (SW 7604) and Vista Paint Winter Harbor (H0051) measure a delta-E of 2.17 apart. They sit within 1.4 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 10 and 9.4. Close, but a large sample of each will show the gap, particularly against white trim. If you need the Smoky Blue depth in Vista Paint's line, start from its LRV of 14.6 rather than matching by name.

Is Sherwin-Williams Smoky Blue the same color as Vista Paint Winter Harbor?

Not quite, but close - Sherwin-Williams Smoky Blue and Vista Paint Winter Harbor are delta-E 2.17 apart, close enough that most rooms would not show the difference.

What is the delta-E between Sherwin-Williams Smoky Blue and Vista Paint Winter Harbor?

The measured color distance between Sherwin-Williams Smoky Blue and Vista Paint Winter Harbor is delta-E 2.17.

Which is lighter, Sherwin-Williams Smoky Blue or Vista Paint Winter Harbor?

Vista Paint Winter Harbor is lighter than Sherwin-Williams Smoky Blue by 1.4 points of light reflectance (LRV).

CLOSEST PAIRΔE 2.17 Smoky Blue and Winter Harbor
LIGHTESTWinter Harbor LRV 16.0
DARKESTSmoky Blue LRV 14.6
SPREAD1.4LRV points

Side by side

measured values
Smoky Blue Winter Harbor
Brand Sherwin-Williams Vista Paint
Code SW 7604 H0051
Hex #596E79 #5F737D
Light reflectance 14.6 16.0
Undertone blue undertone blue undertone
Chroma 10.0 9.4
Hue angle 239.8° 238.1°
Color family teal teal

Each on its own

full detail