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