ΔE 27.1, loose: different enough that you should pick on purpose. Flubber Green is a little darker, much more saturated, cooler than Disgusting Slime.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 27). Flubber Green is a little darker, much more saturated, cooler than Disgusting Slime.
The same difference applies the other way round: Disgusting Slime is a little lighter, much more muted, 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 Disgusting Slime on the colour wheel See Flubber Green on the colour wheel
All matches: Disgusting Slime equivalents · Flubber Green equivalents