Royal Purple vs Persian Violet

How close are they?

ΔE 9.8, close: similar, with a visible difference side by side. Persian Violet is a little lighter, cooler than Royal Purple.

Can I use Persian Violet instead of Royal Purple?

Usually, if you are not matching paint already on the model. Close match (ΔE 10). Persian Violet is a little lighter, cooler than Royal Purple.

Can I use Royal Purple instead of Persian Violet?

The same difference applies the other way round: Royal Purple is a little darker, 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.