ΔE 26.7, loose: different enough that you should pick on purpose. Squid Pink is much more saturated, warmer than Lucius Lilac.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 27). Squid Pink is much more saturated, warmer than Lucius Lilac.
The same difference applies the other way round: Lucius Lilac is 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.
See Lucius Lilac on the colour wheel See Squid Pink on the colour wheel
All matches: Lucius Lilac equivalents · Squid Pink equivalents