ΔE 6.4, close: similar, with a visible difference side by side. Middle Stone is more saturated than Yellow Ochre.
Usually, if you are not matching paint already on the model. Close match (ΔE 6). Middle Stone is more saturated than Yellow Ochre.
The same difference applies the other way round: Yellow 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 Yellow Ochre on the colour wheel See Middle Stone on the colour wheel
All matches: Yellow Ochre equivalents · Middle Stone equivalents