Comparison

Blue Willow vs Chicago Skyline

Behr 570F-4 and Vista Paint 0631, ΔE 2.2 apart

Behr Blue Willow 570F-4 on a wall, hex #9CACB8
Blue Willow Behr 570F-4
Vista Paint Chicago Skyline 0631 on a wall, hex #99AFBC
Chicago Skyline Vista Paint 0631
Zeytin’s verdict · ΔE 2.2Close cousins. Paint a sample of each before you choose.

Behr Blue Willow (570F-4) and Vista Paint Chicago Skyline (0631) measure a delta-E of 2.2 apart. Chicago Skyline is 2 LRV points lighter, which is the difference you notice first. Both carry a similar amount of color, at chroma 8.6 and 10.4. Close, but a large sample of each will show the gap, particularly against white trim. If you need the Blue Willow depth in Vista Paint's line, start from its LRV of 40.0 rather than matching by name.

Is Behr Blue Willow the same color as Vista Paint Chicago Skyline?

Not quite, but close - Behr Blue Willow and Vista Paint Chicago Skyline are delta-E 2.2 apart, close enough that most rooms would not show the difference.

What is the delta-E between Behr Blue Willow and Vista Paint Chicago Skyline?

The measured color distance between Behr Blue Willow and Vista Paint Chicago Skyline is delta-E 2.2.

Which is lighter, Behr Blue Willow or Vista Paint Chicago Skyline?

Vista Paint Chicago Skyline is lighter than Behr Blue Willow by 2 points of light reflectance (LRV).

CLOSEST PAIRΔE 2.2 Blue Willow and Chicago Skyline
LIGHTESTChicago Skyline LRV 42.0
DARKESTBlue Willow LRV 40.0
SPREAD2LRV points

Side by side

measured values
Blue Willow Chicago Skyline
Brand Behr Vista Paint
Code 570F-4 0631
Hex #9CACB8 #99AFBC
Light reflectance 40.0 42.0
Undertone blue undertone blue undertone
Chroma 8.6 10.4
Hue angle 249.2° 242.5°
Color family teal teal

Each on its own

full detail