Tyrian Navy vs Graphite Green

How close are they?

ΔE 13.2, fair: the same colour family, but not a straight swap. Graphite Green is a little lighter than Tyrian Navy.

Can I use Graphite Green instead of Tyrian Navy?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Graphite Green is a little lighter than Tyrian Navy.

Can I use Tyrian Navy instead of Graphite Green?

The same difference applies the other way round: Tyrian Navy is a little darker.

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.