Deep Ocean Blue vs Dark Blue

How close are they?

ΔE 10.1, fair: the same colour family, but not a straight swap. Dark Blue is more saturated than Deep Ocean Blue.

Can I use Dark Blue instead of Deep Ocean Blue?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 10). Dark Blue is more saturated than Deep Ocean Blue.

Can I use Deep Ocean Blue instead of Dark Blue?

The same difference applies the other way round: Deep Ocean Blue is 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.