Olive Ink vs Ink Black

How close are they?

ΔE 12.7, fair: the same colour family, but not a straight swap. Ink Black is a little darker, more muted than Olive Ink.

Can I use Ink Black instead of Olive Ink?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Ink Black is a little darker, more muted than Olive Ink.

Can I use Olive Ink instead of Ink Black?

The same difference applies the other way round: Olive Ink is a little lighter, more saturated.

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.