ΔE 39.6, loose: different enough that you should pick on purpose. Sirenscale Green is noticeably lighter, much more saturated, warmer than Azure Magic.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 40). Sirenscale Green is noticeably lighter, much more saturated, warmer than Azure Magic.
The same difference applies the other way round: Azure Magic is noticeably darker, much more muted, 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 Azure Magic on the colour wheel See Sirenscale Green on the colour wheel
All matches: Azure Magic equivalents · Sirenscale Green equivalents