Amulet Aqua vs Caribbean Blue

How close are they?

ΔE 8.6, close: similar, with a visible difference side by side. Caribbean Blue is a little darker, more saturated, cooler than Amulet Aqua.

Can I use Caribbean Blue instead of Amulet Aqua?

Usually, if you are not matching paint already on the model. Close match (ΔE 9). Caribbean Blue is a little darker, more saturated, cooler than Amulet Aqua.

Can I use Amulet Aqua instead of Caribbean Blue?

The same difference applies the other way round: Amulet Aqua is a little lighter, 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.