ΔE 25.3, loose: different enough that you should pick on purpose. Amber Green is noticeably lighter, warmer than Borealis Green.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 25). Amber Green is noticeably lighter, warmer than Borealis Green.
The same difference applies the other way round: Borealis Green is noticeably darker, 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 Borealis Green on the colour wheel See Amber Green on the colour wheel
All matches: Borealis Green equivalents · Amber Green equivalents