ΔE 16.3, loose: different enough that you should pick on purpose. Benzimidazolone Yellow Light is noticeably lighter, more saturated than Poisonous Cloud.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 16). Benzimidazolone Yellow Light is noticeably lighter, more saturated than Poisonous Cloud.
The same difference applies the other way round: Poisonous Cloud is noticeably 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 Poisonous Cloud on the colour wheel See Benzimidazolone Yellow Light on the colour wheel
All matches: Poisonous Cloud equivalents · Benzimidazolone Yellow Light equivalents