ΔE 14.6, fair: the same colour family, but not a straight swap. Pale Skin is a little darker, more saturated, warmer than Wraithbone.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 15). Pale Skin is a little darker, more saturated, warmer than Wraithbone.
The same difference applies the other way round: Wraithbone is a little lighter, more muted, cooler.
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 Wraithbone on the colour wheel See Pale Skin on the colour wheel
All matches: Wraithbone equivalents · Pale Skin equivalents