Comparison

White Fever vs Cotton White

Dunn-Edwards DEW345 and Sherwin-Williams SW 7104, ΔE 1.71 apart

Dunn-Edwards White Fever DEW345 on a wall, hex #FBF4E8
White Fever Dunn-Edwards DEW345
Sherwin-Williams Cotton White SW 7104 on a wall, hex #F7EFE3
Cotton White Sherwin-Williams SW 7104
Zeytin’s verdict · ΔE 1.71Twins, almost. Only daylight on a big wall tells them apart.

Dunn-Edwards White Fever (DEW345) and Sherwin-Williams Cotton White (SW 7104) measure a delta-E of 1.71 apart. White Fever is 3.9 LRV points lighter, which is the difference you notice first. Both carry a similar amount of color, at chroma 6.6 and 6.8. The difference is measurable but subtle. It shows on a large wall in strong daylight and disappears under lamplight. If you need the Cotton White depth in Dunn-Edwards's line, start from its LRV of 87.1 rather than matching by name.

Is Dunn-Edwards White Fever the same color as Sherwin-Williams Cotton White?

Not quite, but close - Dunn-Edwards White Fever and Sherwin-Williams Cotton White are delta-E 1.71 apart, close enough that most rooms would not show the difference.

What is the delta-E between Dunn-Edwards White Fever and Sherwin-Williams Cotton White?

The measured color distance between Dunn-Edwards White Fever and Sherwin-Williams Cotton White is delta-E 1.71.

Which is lighter, Dunn-Edwards White Fever or Sherwin-Williams Cotton White?

Dunn-Edwards White Fever is lighter than Sherwin-Williams Cotton White by 3.9 points of light reflectance (LRV).

CLOSEST PAIRΔE 1.71 White Fever and Cotton White
LIGHTESTWhite Fever LRV 91.0
DARKESTCotton White LRV 87.1
SPREAD3.9LRV points

Side by side

measured values
White Fever Cotton White
Brand Dunn-Edwards Sherwin-Williams
Code DEW345 SW 7104
Hex #FBF4E8 #F7EFE3
Light reflectance 91.0 87.1
Undertone yellow cast yellow cast
Chroma 6.6 6.8
Hue angle 87.2° 84.3°
Color family white white

Each on its own

full detail