ΔE 8.8, close: similar, with a visible difference side by side. USAF Tan is a little darker, more saturated, cooler than Elven Skin.
Usually, if you are not matching paint already on the model. Close match (ΔE 9). USAF Tan is a little darker, more saturated, cooler than Elven Skin.
The same difference applies the other way round: Elven Skin is a little lighter, more muted, 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 Elven Skin on the colour wheel See USAF Tan on the colour wheel
All matches: Elven Skin equivalents · USAF Tan equivalents