Gal Vorbak Red vs Wonka Violet

How close are they?

ΔE 18.8, loose: different enough that you should pick on purpose. Wonka Violet is a little lighter, much more saturated, cooler than Gal Vorbak Red.

Can I use Wonka Violet instead of Gal Vorbak Red?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 19). Wonka Violet is a little lighter, much more saturated, cooler than Gal Vorbak Red.

Can I use Gal Vorbak Red instead of Wonka Violet?

The same difference applies the other way round: Gal Vorbak Red is a little darker, much 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.