Dark Purple vs Midnight Purple

How close are they?

ΔE 16.9, loose: different enough that you should pick on purpose. Midnight Purple is a little darker, much more muted than Dark Purple.

Can I use Midnight Purple instead of Dark Purple?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 17). Midnight Purple is a little darker, much more muted than Dark Purple.

Can I use Dark Purple instead of Midnight Purple?

The same difference applies the other way round: Dark Purple is a little lighter, much 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.