Sugar Rush vs Celestial Violet

How close are they?

ΔE 9.3, close: similar, with a visible difference side by side. Celestial Violet is a little darker, warmer than Sugar Rush.

Can I use Celestial Violet instead of Sugar Rush?

Usually, if you are not matching paint already on the model. Close match (ΔE 9). Celestial Violet is a little darker, warmer than Sugar Rush.

Can I use Sugar Rush instead of Celestial Violet?

The same difference applies the other way round: Sugar Rush is a little lighter, 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.