ΔE 16.6, loose: different enough that you should pick on purpose. Hexed Lichen is a little lighter, warmer than Lapislazuli.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 17). Hexed Lichen is a little lighter, warmer than Lapislazuli.
The same difference applies the other way round: Lapislazuli is a little darker, 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 Lapislazuli on the colour wheel See Hexed Lichen on the colour wheel
All matches: Lapislazuli equivalents · Hexed Lichen equivalents