ΔE 7.3, close: similar, with a visible difference side by side. Lavender is a little darker than Genestealer Purple.
Usually, if you are not matching paint already on the model. Close match (ΔE 7). Lavender is a little darker than Genestealer Purple.
The same difference applies the other way round: Genestealer Purple is a little lighter.
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 Genestealer Purple on the colour wheel See Lavender on the colour wheel
All matches: Genestealer Purple equivalents · Lavender equivalents