ΔE 8.8, close: similar, with a visible difference side by side. Flat Flesh is a little lighter, warmer than T'au Light Ochre.
Usually, if you are not matching paint already on the model. Close match (ΔE 9). Flat Flesh is a little lighter, warmer than T'au Light Ochre.
The same difference applies the other way round: T'au Light Ochre is a little darker, 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 T'au Light Ochre on the colour wheel See Flat Flesh on the colour wheel
All matches: T'au Light Ochre equivalents · Flat Flesh equivalents