ΔE 14.3, fair: the same colour family, but not a straight swap. Sickly Skin is a little lighter, more saturated, cooler than Tyrant Skull.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Sickly Skin is a little lighter, more saturated, cooler than Tyrant Skull.
The same difference applies the other way round: Tyrant Skull is a little darker, 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 Tyrant Skull on the colour wheel See Sickly Skin on the colour wheel
All matches: Tyrant Skull equivalents · Sickly Skin equivalents