Comparison

Frosty Fog vs Wishful Blue

Dunn-Edwards DE5917 and Sherwin-Williams SW 6813, ΔE 1.77 apart

Dunn-Edwards Frosty Fog DE5917 on a wall, hex #DEE1E9
Frosty Fog Dunn-Edwards DE5917
Sherwin-Williams Wishful Blue SW 6813 on a wall, hex #D8DDE6
Wishful Blue Sherwin-Williams SW 6813
Zeytin’s verdict · ΔE 1.77Twins, almost. Only daylight on a big wall tells them apart.

Dunn-Edwards Frosty Fog (DE5917) and Sherwin-Williams Wishful Blue (SW 6813) measure a delta-E of 1.77 apart. Frosty Fog is 3.5 LRV points lighter, which is the difference you notice first. Both carry a similar amount of color, at chroma 4.3 and 5. The difference is measurable but subtle. It shows on a large wall in strong daylight and disappears under lamplight. If you need the Wishful Blue depth in Dunn-Edwards's line, start from its LRV of 71.8 rather than matching by name.

Is Dunn-Edwards Frosty Fog the same color as Sherwin-Williams Wishful Blue?

Not quite, but close - Dunn-Edwards Frosty Fog and Sherwin-Williams Wishful Blue are delta-E 1.77 apart, close enough that most rooms would not show the difference.

What is the delta-E between Dunn-Edwards Frosty Fog and Sherwin-Williams Wishful Blue?

The measured color distance between Dunn-Edwards Frosty Fog and Sherwin-Williams Wishful Blue is delta-E 1.77.

Which is lighter, Dunn-Edwards Frosty Fog or Sherwin-Williams Wishful Blue?

Dunn-Edwards Frosty Fog is lighter than Sherwin-Williams Wishful Blue by 3.5 points of light reflectance (LRV).

CLOSEST PAIRΔE 1.77 Frosty Fog and Wishful Blue
LIGHTESTFrosty Fog LRV 75.3
DARKESTWishful Blue LRV 71.8
SPREAD3.5LRV points

Side by side

measured values
Frosty Fog Wishful Blue
Brand Dunn-Edwards Sherwin-Williams
Code DE5917 SW 6813
Hex #DEE1E9 #D8DDE6
Light reflectance 75.3 71.8
Undertone cool blue-gray cool blue-gray
Chroma 4.3 5.0
Hue angle 276.3° 270.0°
Color family gray gray

Each on its own

full detail