ΔE 16.6, loose: different enough that you should pick on purpose. Base Flesh is noticeably darker, more muted than Chibi Skin.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 17). Base Flesh is noticeably darker, more muted than Chibi Skin.
The same difference applies the other way round: Chibi Skin is noticeably 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 Chibi Skin on the colour wheel See Base Flesh on the colour wheel
All matches: Chibi Skin equivalents · Base Flesh equivalents