Electric Blue vs Sky Blue

How close are they?

ΔE 7.0, close: similar, with a visible difference side by side. Sky Blue is more muted, cooler than Electric Blue.

Can I use Sky Blue instead of Electric Blue?

Usually, if you are not matching paint already on the model. Close match (ΔE 7). Sky Blue is more muted, cooler than Electric Blue.

Can I use Electric Blue instead of Sky Blue?

The same difference applies the other way round: Electric Blue 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.