Navy Blue vs Turquoise Deep

How close are they?

ΔE 13.1, fair: the same colour family, but not a straight swap. Turquoise Deep is a little lighter, more saturated, warmer than Navy Blue.

Can I use Turquoise Deep instead of Navy Blue?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Turquoise Deep is a little lighter, more saturated, warmer than Navy Blue.

Can I use Navy Blue instead of Turquoise Deep?

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