ΔE 13.4, fair: the same colour family, but not a straight swap. Tyrant Skull is more muted, cooler than Elf Skin.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Tyrant Skull is more muted, cooler than Elf Skin.
The same difference applies the other way round: Elf Skin is more saturated, 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 Elf Skin on the colour wheel See Tyrant Skull on the colour wheel
All matches: Elf Skin equivalents · Tyrant Skull equivalents