ΔE 19.2, loose: different enough that you should pick on purpose. Phthalo Blue (Green Shade) is noticeably lighter, cooler than Hive Dweller Purple. They are different kinds of paint: Army Painter Hive Dweller Purple is a one-coat contrast-style paint and Golden Phthalo Blue (Green Shade) is an ink, glaze or transparent paint, so they won’t behave the same on the model even where the colour is close.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 19). Phthalo Blue (Green Shade) is noticeably lighter, cooler than Hive Dweller Purple. They are different kinds of paint.
The same difference applies the other way round: Hive Dweller Purple is noticeably darker, 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 Hive Dweller Purple on the colour wheel See Phthalo Blue (Green Shade) on the colour wheel
All matches: Hive Dweller Purple equivalents · Phthalo Blue (Green Shade) equivalents