ΔE 9.0, close: similar, with a visible difference side by side. Earth is more saturated, cooler than Tanned Leather.
Usually, if you are not matching paint already on the model. Close match (ΔE 9). Earth is more saturated, cooler than Tanned Leather.
The same difference applies the other way round: Tanned Leather 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 Tanned Leather on the colour wheel See Earth on the colour wheel
All matches: Tanned Leather equivalents · Earth equivalents