ΔE 34.8, loose: different enough that you should pick on purpose. Ink Skin is noticeably darker, much more muted, cooler than Inktense Oxide.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 35). Ink Skin is noticeably darker, much more muted, cooler than Inktense Oxide.
The same difference applies the other way round: Inktense Oxide is noticeably lighter, much more saturated, warmer.
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 Inktense Oxide on the colour wheel See Ink Skin on the colour wheel
All matches: Inktense Oxide equivalents · Ink Skin equivalents