ΔE 23.6, loose: different enough that you should pick on purpose. Phthalo Green is noticeably darker, much more muted, cooler than Elemental Bolt.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 24). Phthalo Green is noticeably darker, much more muted, cooler than Elemental Bolt.
The same difference applies the other way round: Elemental Bolt is noticeably lighter, much 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 Elemental Bolt on the colour wheel See Phthalo Green on the colour wheel
All matches: Elemental Bolt equivalents · Phthalo Green equivalents