ΔE 20.3, loose: different enough that you should pick on purpose. Hexed Lichen is much more muted, warmer than Marine Blue.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 20). Hexed Lichen is much more muted, warmer than Marine Blue.
The same difference applies the other way round: Marine Blue is much more saturated, 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 Marine Blue on the colour wheel See Hexed Lichen on the colour wheel
All matches: Marine Blue equivalents · Hexed Lichen equivalents