Purple Rain vs Azure

How close are they?

ΔE 11.1, fair: the same colour family, but not a straight swap. Azure is more muted, cooler than Purple Rain.

Can I use Azure instead of Purple Rain?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Azure is more muted, cooler than Purple Rain.

Can I use Purple Rain instead of Azure?

The same difference applies the other way round: Purple Rain 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.