Deep Grey vs Caspian Blue

How close are they?

ΔE 11.6, fair: the same colour family, but not a straight swap. Caspian Blue is more saturated, cooler than Deep Grey.

Can I use Caspian Blue instead of Deep Grey?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Caspian Blue is more saturated, cooler than Deep Grey.

Can I use Deep Grey instead of Caspian Blue?

The same difference applies the other way round: Deep Grey is more muted, 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.