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