ΔE 9.1, close: similar, with a visible difference side by side. Pale Brown is a little lighter, more muted, warmer than Tanned Shadow.
Usually, if you are not matching paint already on the model. Close match (ΔE 9). Pale Brown is a little lighter, more muted, warmer than Tanned Shadow.
The same difference applies the other way round: Tanned Shadow is a little darker, more saturated, cooler.
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 Shadow on the colour wheel See Pale Brown on the colour wheel
All matches: Tanned Shadow equivalents · Pale Brown equivalents