ΔE 9.3, close: similar, with a visible difference side by side. Tanned Skin is more saturated, cooler than Warm Brown.
Usually, if you are not matching paint already on the model. Close match (ΔE 9). Tanned Skin is more saturated, cooler than Warm Brown.
The same difference applies the other way round: Warm Brown is 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 Warm Brown on the colour wheel See Tanned Skin on the colour wheel
All matches: Warm Brown equivalents · Tanned Skin equivalents