Faust Blue vs Turquoise

How close are they?

ΔE 14.9, fair: the same colour family, but not a straight swap. Turquoise is a little darker, much more saturated than Faust Blue.

Can I use Turquoise instead of Faust Blue?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 15). Turquoise is a little darker, much more saturated than Faust Blue.

Can I use Faust Blue instead of Turquoise?

The same difference applies the other way round: Faust Blue is a little lighter, much 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.