Lucius Lilac vs Lilac Purple

How close are they?

ΔE 24.6, loose: different enough that you should pick on purpose. Lilac Purple is noticeably darker, much more saturated, warmer than Lucius Lilac.

Can I use Lilac Purple instead of Lucius Lilac?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 25). Lilac Purple is noticeably darker, much more saturated, warmer than Lucius Lilac.

Can I use Lucius Lilac instead of Lilac Purple?

The same difference applies the other way round: Lucius Lilac is noticeably lighter, much more muted, cooler.

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.