Comparison

Wickham Gray vs Fog

Benjamin Moore HC-171 and PPG 1010-2, ΔE 1.22 apart

Benjamin Moore Wickham Gray HC-171 on a wall, hex #D4D8D2
Wickham Gray Benjamin Moore HC-171
PPG Fog 1010-2 on a wall, hex #D6D7D2
Fog PPG 1010-2
Zeytin’s verdict · ΔE 1.22Twins, almost. Only daylight on a big wall tells them apart.

Benjamin Moore Wickham Gray (HC-171) and PPG Fog (1010-2) measure a delta-E of 1.22 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 3.5 and 2.6. The undertones part company: Wickham Gray reads as a yellow-green cast at hue angle 134.6 degrees, Fog as a true neutral at 117.8. The difference is measurable but subtle. It shows on a large wall in strong daylight and disappears under lamplight. If you need the Fog depth in Benjamin Moore's line, start from its LRV of 67.0 rather than matching by name.

Is Benjamin Moore Wickham Gray the same color as PPG Fog?

Not quite, but close - Benjamin Moore Wickham Gray and PPG Fog are delta-E 1.22 apart, close enough that most rooms would not show the difference.

What is the delta-E between Benjamin Moore Wickham Gray and PPG Fog?

The measured color distance between Benjamin Moore Wickham Gray and PPG Fog is delta-E 1.22.

CLOSEST PAIRΔE 1.22 Wickham Gray and Fog
LIGHTESTWickham Gray LRV 67.9
DARKESTFog LRV 67.0
SPREAD0.9LRV points

Side by side

measured values
Wickham Gray Fog
Brand Benjamin Moore PPG
Code HC-171 1010-2
Hex #D4D8D2 #D6D7D2
Light reflectance 67.9 67.0
Undertone yellow-green cast true neutral
Chroma 3.5 2.6
Hue angle 134.6° 117.8°
Color family gray gray

Each on its own

full detail