Comparison

Cook's Blue vs Himalaya Sky

Farrow & Ball 237 and Vista Paint 0597, ΔE 6.9 apart

Farrow & Ball Cook's Blue 237 on a wall, hex #6A8FB2
Cook's Blue Farrow & Ball 237
Vista Paint Himalaya Sky 0597 on a wall, hex #7C98C3
Himalaya Sky Vista Paint 0597
Zeytin’s verdict · ΔE 6.9Not even close. Pick the one you actually want.

Farrow & Ball Cook's Blue (237) and Vista Paint Himalaya Sky (0597) measure a delta-E of 6.9 apart. Himalaya Sky is 5.1 LRV points lighter, which is the difference you notice first. Himalaya Sky holds more color, chroma 25.4 against 22.7, so it grays out less in dim light. These read as related but distinct. Sample both before committing. If you need the Cook's Blue depth in Vista Paint's line, start from its LRV of 25.9 rather than matching by name.

What is the difference between Farrow & Ball Cook's Blue and Vista Paint Himalaya Sky?

Farrow & Ball Cook's Blue and Vista Paint Himalaya Sky are delta-E 6.9 apart - a difference that shows up on a wall, not just side by side on two chips.

What is the delta-E between Farrow & Ball Cook's Blue and Vista Paint Himalaya Sky?

The measured color distance between Farrow & Ball Cook's Blue and Vista Paint Himalaya Sky is delta-E 6.9.

Which is lighter, Farrow & Ball Cook's Blue or Vista Paint Himalaya Sky?

Vista Paint Himalaya Sky is lighter than Farrow & Ball Cook's Blue by 5.1 points of light reflectance (LRV).

CLOSEST PAIRΔE 6.9 Cook's Blue and Himalaya Sky
LIGHTESTHimalaya Sky LRV 31.0
DARKESTCook's Blue LRV 25.9
SPREAD5.1LRV points

Side by side

measured values
Cook's Blue Himalaya Sky
Brand Farrow & Ball Vista Paint
Code 237 0597
Hex #6A8FB2 #7C98C3
Light reflectance 25.9 31.0
Undertone blue blue
Chroma 22.7 25.4
Hue angle 260.7° 272.0°
Color family blue blue

Each on its own

full detail