ΔE 12.0, fair: the same colour family, but not a straight swap. Tooth and Nails is noticeably lighter, warmer than Wraithbone.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Tooth and Nails is noticeably lighter, warmer than Wraithbone.
The same difference applies the other way round: Wraithbone is noticeably darker, 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 Tooth and Nails on the colour wheel
All matches: Wraithbone equivalents · Tooth and Nails equivalents