ΔE 12.3, fair: the same colour family, but not a straight swap. Red Oxide Tint is noticeably darker, cooler than Tanned Skin.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Red Oxide Tint is noticeably darker, cooler than Tanned Skin.
The same difference applies the other way round: Tanned Skin is noticeably lighter, 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 Tanned Skin on the colour wheel See Red Oxide Tint on the colour wheel
All matches: Tanned Skin equivalents · Red Oxide Tint equivalents