Cold Open vs Hydra Turquoise

How close are they?

ΔE 10.6, fair: the same colour family, but not a straight swap. Hydra Turquoise is a little darker, cooler than Cold Open.

Can I use Hydra Turquoise instead of Cold Open?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Hydra Turquoise is a little darker, cooler than Cold Open.

Can I use Cold Open instead of Hydra Turquoise?

The same difference applies the other way round: Cold Open is a little lighter, 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.