WWI German Lilac vs Lucius Lilac

How close are they?

ΔE 10.8, fair: the same colour family, but not a straight swap. Lucius Lilac is a little lighter, cooler than WWI German Lilac.

Can I use Lucius Lilac instead of WWI German Lilac?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Lucius Lilac is a little lighter, cooler than WWI German Lilac.

Can I use WWI German Lilac instead of Lucius Lilac?

The same difference applies the other way round: WWI German Lilac is a little darker, warmer.

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.