ΔE 58.6, loose: different enough that you should pick on purpose. Fluorescent Green is noticeably darker, more muted, cooler than Yellow Fluor.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 59). Fluorescent Green is noticeably darker, more muted, cooler than Yellow Fluor.
The same difference applies the other way round: Yellow Fluor is noticeably lighter, 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 Yellow Fluor on the colour wheel See Fluorescent Green on the colour wheel
All matches: Yellow Fluor equivalents · Fluorescent Green equivalents