ΔE 12.8, fair: the same colour family, but not a straight swap. Kislev Flesh is a little darker, much more muted than Rosy Skin.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Kislev Flesh is a little darker, much more muted than Rosy Skin.
The same difference applies the other way round: Rosy Skin is a little lighter, much 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 Rosy Skin on the colour wheel See Kislev Flesh on the colour wheel
All matches: Rosy Skin equivalents · Kislev Flesh equivalents