ΔE 11.4, fair: the same colour family, but not a straight swap. Wraithbone is noticeably darker, cooler than Light Skin.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Wraithbone is noticeably darker, cooler than Light Skin.
The same difference applies the other way round: Light Skin is noticeably lighter, 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 Light Skin on the colour wheel See Wraithbone on the colour wheel
All matches: Light Skin equivalents · Wraithbone equivalents