ΔE 8.1, close: similar, with a visible difference side by side. Fluorescent Green is a little lighter, more saturated than Green Fluor.
Usually, if you are not matching paint already on the model. Close match (ΔE 8). Fluorescent Green is a little lighter, more saturated than Green Fluor.
The same difference applies the other way round: Green Fluor is a little darker, more muted.
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 Green Fluor on the colour wheel See Fluorescent Green on the colour wheel
All matches: Green Fluor equivalents · Fluorescent Green equivalents