Amethyst Alchemy vs Celestial Violet

How close are they?

ΔE 10.9, fair: the same colour family, but not a straight swap. Celestial Violet is a little darker, more saturated than Amethyst Alchemy.

Can I use Celestial Violet instead of Amethyst Alchemy?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Celestial Violet is a little darker, more saturated than Amethyst Alchemy.

Can I use Amethyst Alchemy instead of Celestial Violet?

The same difference applies the other way round: Amethyst Alchemy is a little lighter, more muted.

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.