Medium German Yellow vs Imp Yellow

How close are they?

ΔE 11.8, fair: the same colour family, but not a straight swap. Imp Yellow is a little lighter, warmer than Medium German Yellow.

Can I use Imp Yellow instead of Medium German Yellow?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Imp Yellow is a little lighter, warmer than Medium German Yellow.

Can I use Medium German Yellow instead of Imp Yellow?

The same difference applies the other way round: Medium German Yellow is a little darker, cooler.

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.