Turquoise Blue vs Deep Azure

How close are they?

ΔE 12.3, fair: the same colour family, but not a straight swap. Deep Azure is a little lighter, warmer than Turquoise Blue.

Can I use Deep Azure instead of Turquoise Blue?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Deep Azure is a little lighter, warmer than Turquoise Blue.

Can I use Turquoise Blue instead of Deep Azure?

The same difference applies the other way round: Turquoise Blue is a little darker, 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.