ΔE 27.8, loose: different enough that you should pick on purpose. Ray Gun Glow is a little darker, much more muted, cooler than Hazardous Smog.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 28). Ray Gun Glow is a little darker, much more muted, cooler than Hazardous Smog.
The same difference applies the other way round: Hazardous Smog is a little lighter, much 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 Hazardous Smog on the colour wheel See Ray Gun Glow on the colour wheel
All matches: Hazardous Smog equivalents · Ray Gun Glow equivalents