Splittermuster Base vs Sulfide Ochre

How close are they?

ΔE 6.7, close: similar, with a visible difference side by side. Sulfide Ochre is more saturated than Splittermuster Base.

Can I use Sulfide Ochre instead of Splittermuster Base?

Usually, if you are not matching paint already on the model. Close match (ΔE 7). Sulfide Ochre is more saturated than Splittermuster Base.

Can I use Splittermuster Base instead of Sulfide Ochre?

The same difference applies the other way round: Splittermuster Base 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.