ΔE 16.3, loose: different enough that you should pick on purpose. IJA Chrome Yellow is a little lighter, more muted, cooler than Isoindolinone Yellow.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 16). IJA Chrome Yellow is a little lighter, more muted, cooler than Isoindolinone Yellow.
The same difference applies the other way round: Isoindolinone Yellow is a little darker, 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 Isoindolinone Yellow on the colour wheel See IJA Chrome Yellow on the colour wheel
All matches: Isoindolinone Yellow equivalents · IJA Chrome Yellow equivalents