British Brown vs Sulfide Ochre

How close are they?

ΔE 6.8, close: similar, with a visible difference side by side. Sulfide Ochre is more muted, cooler than British Brown.

Can I use Sulfide Ochre instead of British Brown?

Usually, if you are not matching paint already on the model. Close match (ΔE 7). Sulfide Ochre is more muted, cooler than British Brown.

Can I use British Brown instead of Sulfide Ochre?

The same difference applies the other way round: British Brown is more saturated, 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.