Temple Ochre vs German Yellow

How close are they?

ΔE 18.3, loose: different enough that you should pick on purpose. German Yellow is a little lighter, more saturated, cooler than Temple Ochre.

Can I use German Yellow instead of Temple Ochre?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 18). German Yellow is a little lighter, more saturated, cooler than Temple Ochre.

Can I use Temple Ochre instead of German Yellow?

The same difference applies the other way round: Temple Ochre is a little darker, 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.