ΔE 15.2, loose: different enough that you should pick on purpose. Rotten Pus is more saturated, warmer than Ironjawz Yellow.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 15). Rotten Pus is more saturated, warmer than Ironjawz Yellow.
The same difference applies the other way round: Ironjawz Yellow is more muted, cooler.
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 Ironjawz Yellow on the colour wheel See Rotten Pus on the colour wheel
All matches: Ironjawz Yellow equivalents · Rotten Pus equivalents