ΔE 10.4, fair: the same colour family, but not a straight swap. Kislev Flesh is a little darker, more muted than Sickly Pink.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 10). Kislev Flesh is a little darker, more muted than Sickly Pink.
The same difference applies the other way round: Sickly Pink is a little lighter, more saturated.
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 Sickly Pink on the colour wheel See Kislev Flesh on the colour wheel
All matches: Sickly Pink equivalents · Kislev Flesh equivalents