Comparison

December Sky vs White Palace

Dunn-Edwards DE6352 and Vista Paint 8251, ΔE 1.12 apart

Dunn-Edwards December Sky DE6352 on a wall, hex #D5D7D9
December Sky Dunn-Edwards DE6352
Vista Paint White Palace 8251 on a wall, hex #D4D6D6
White Palace Vista Paint 8251
Zeytin’s verdict · ΔE 1.12Twins, almost. Only daylight on a big wall tells them apart.

Dunn-Edwards December Sky (DE6352) and Vista Paint White Palace (8251) measure a delta-E of 1.12 apart. December Sky is 3.8 LRV points lighter, which is the difference you notice first. Both carry a similar amount of color, at chroma 1.3 and 0.7. The undertones part company: December Sky reads as a cool blue-gray at hue angle 255.9 degrees, White Palace as a cool teal-gray at 200.2. The difference is measurable but subtle. It shows on a large wall in strong daylight and disappears under lamplight. If you need the White Palace depth in Dunn-Edwards's line, start from its LRV of 64.0 rather than matching by name.

Is Dunn-Edwards December Sky the same color as Vista Paint White Palace?

Not quite, but close - Dunn-Edwards December Sky and Vista Paint White Palace are delta-E 1.12 apart, close enough that most rooms would not show the difference.

What is the delta-E between Dunn-Edwards December Sky and Vista Paint White Palace?

The measured color distance between Dunn-Edwards December Sky and Vista Paint White Palace is delta-E 1.12.

Which is lighter, Dunn-Edwards December Sky or Vista Paint White Palace?

Dunn-Edwards December Sky is lighter than Vista Paint White Palace by 3.8 points of light reflectance (LRV).

CLOSEST PAIRΔE 1.12 December Sky and White Palace
LIGHTESTDecember Sky LRV 67.8
DARKESTWhite Palace LRV 64.0
SPREAD3.8LRV points

Side by side

measured values
December Sky White Palace
Brand Dunn-Edwards Vista Paint
Code DE6352 8251
Hex #D5D7D9 #D4D6D6
Light reflectance 67.8 64.0
Undertone cool blue-gray cool teal-gray
Chroma 1.3 0.7
Hue angle 255.9° 200.2°
Color family gray gray

Each on its own

full detail