ΔE 9.2, close: similar, with a visible difference side by side. Yellow Ochre is more saturated, cooler than Japanese Brown.
Usually, if you are not matching paint already on the model. Close match (ΔE 9). Yellow Ochre is more saturated, cooler than Japanese Brown.
The same difference applies the other way round: Japanese Brown is more muted, warmer.
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 Japanese Brown on the colour wheel See Yellow Ochre on the colour wheel
All matches: Japanese Brown equivalents · Yellow Ochre equivalents