Lilac vs Lucius Lilac

How close are they?

ΔE 13.5, fair: the same colour family, but not a straight swap. Lucius Lilac is more muted, warmer than Lilac.

Can I use Lucius Lilac instead of Lilac?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Lucius Lilac is more muted, warmer than Lilac.

Can I use Lilac instead of Lucius Lilac?

The same difference applies the other way round: Lilac is more saturated, 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.