ΔE 21.6, loose: different enough that you should pick on purpose. JASDF Shallow Ocean Blue is a little darker, more muted, cooler than Hexed Violet.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 22). JASDF Shallow Ocean Blue is a little darker, more muted, cooler than Hexed Violet.
The same difference applies the other way round: Hexed Violet is a little lighter, more saturated, warmer.
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 Hexed Violet on the colour wheel See JASDF Shallow Ocean Blue on the colour wheel
All matches: Hexed Violet equivalents · JASDF Shallow Ocean Blue equivalents