ΔE 12.9, fair: the same colour family, but not a straight swap. Diviner Light is a little lighter, more saturated, warmer than WWI German Lilac.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Diviner Light is a little lighter, more saturated, warmer than WWI German Lilac.
The same difference applies the other way round: WWI German Lilac is a little darker, 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.
See WWI German Lilac on the colour wheel See Diviner Light on the colour wheel
All matches: WWI German Lilac equivalents · Diviner Light equivalents