Comparison

Windy Blue vs Glacier Mist

Sherwin-Williams SW 6240 and Valspar 4005-3B, ΔE 1.87 apart

Sherwin-Williams Windy Blue SW 6240 on a wall, hex #AABAC6
Windy Blue Sherwin-Williams SW 6240
Valspar Glacier Mist 4005-3B on a wall, hex #A7BAC9
Glacier Mist Valspar 4005-3B
Zeytin’s verdict · ΔE 1.87Twins, almost. Only daylight on a big wall tells them apart.

Sherwin-Williams Windy Blue (SW 6240) and Valspar Glacier Mist (4005-3B) measure a delta-E of 1.87 apart. They sit within 0.5 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 8.5 and 10.3. The difference is measurable but subtle. It shows on a large wall in strong daylight and disappears under lamplight. If you need the Glacier Mist depth in Sherwin-Williams's line, start from its LRV of 47.0 rather than matching by name.

Is Sherwin-Williams Windy Blue the same color as Valspar Glacier Mist?

Not quite, but close - Sherwin-Williams Windy Blue and Valspar Glacier Mist are delta-E 1.87 apart, close enough that most rooms would not show the difference.

What is the delta-E between Sherwin-Williams Windy Blue and Valspar Glacier Mist?

The measured color distance between Sherwin-Williams Windy Blue and Valspar Glacier Mist is delta-E 1.87.

CLOSEST PAIRΔE 1.87 Windy Blue and Glacier Mist
LIGHTESTWindy Blue LRV 47.5
DARKESTGlacier Mist LRV 47.0
SPREAD0.5LRV points

Side by side

measured values
Windy Blue Glacier Mist
Brand Sherwin-Williams Valspar
Code SW 6240 4005-3B
Hex #AABAC6 #A7BAC9
Light reflectance 47.5 47.0
Undertone blue undertone blue undertone
Chroma 8.5 10.3
Hue angle 249.1° 251.0°
Color family teal teal

Each on its own

full detail