ΔE 7.3, close: similar, with a visible difference side by side. Leather Brown is more saturated than T'au Light Ochre.
Usually, if you are not matching paint already on the model. Close match (ΔE 7). Leather Brown is more saturated than T'au Light Ochre.
The same difference applies the other way round: T'au Light Ochre is more muted.
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 T'au Light Ochre on the colour wheel See Leather Brown on the colour wheel
All matches: T'au Light Ochre equivalents · Leather Brown equivalents