ΔE 14.3, fair: the same colour family, but not a straight swap. Sickly Skin is more saturated, cooler than Feywild Glow.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Sickly Skin is more saturated, cooler than Feywild Glow.
The same difference applies the other way round: Feywild Glow is more muted, warmer.
ΔE is the colour difference between our two swatch estimates: under about 6 is close, over about 15 is loose. Real paints also differ in finish, coverage and how they thin, so test before you commit.
See Feywild Glow on the colour wheel See Sickly Skin on the colour wheel
All matches: Feywild Glow equivalents · Sickly Skin equivalents