ΔE 5.9, very close: most people won’t see a difference side by side. Orange Rust is a little lighter, more saturated than Ta'unar Ochre.
Yes, for most jobs. Very close match (ΔE 6). Orange Rust is a little lighter, more saturated than Ta'unar Ochre.
The same difference applies the other way round: Ta'unar Ochre is a little darker, 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 Ta'unar Ochre on the colour wheel See Orange Rust on the colour wheel
All matches: Ta'unar Ochre equivalents · Orange Rust equivalents