Archaic Turquoise vs Nocturne Green

How close are they?

ΔE 12.8, fair: the same colour family, but not a straight swap. Nocturne Green is a little lighter, cooler than Archaic Turquoise.

Can I use Nocturne Green instead of Archaic Turquoise?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Nocturne Green is a little lighter, cooler than Archaic Turquoise.

Can I use Archaic Turquoise instead of Nocturne Green?

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