Imp Yellow vs Ambush Yellow

How close are they?

ΔE 8.1, close: similar, with a visible difference side by side. Ambush Yellow is more muted, cooler than Imp Yellow.

Can I use Ambush Yellow instead of Imp Yellow?

Usually, if you are not matching paint already on the model. Close match (ΔE 8). Ambush Yellow is more muted, cooler than Imp Yellow.

Can I use Imp Yellow instead of Ambush Yellow?

The same difference applies the other way round: Imp Yellow 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.