ΔE 15.9, loose: different enough that you should pick on purpose. Blue is a little lighter, much more muted, warmer than Blue Gorkshroom.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 16). Blue is a little lighter, much more muted, warmer than Blue Gorkshroom.
The same difference applies the other way round: Blue Gorkshroom is a little darker, 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 Blue Gorkshroom on the colour wheel See Blue on the colour wheel
All matches: Blue Gorkshroom equivalents · Blue equivalents