ΔE 16.6, loose: different enough that you should pick on purpose. Bad Moon Yellow is a little lighter, cooler than Zealot Yellow.
✓ Herrick Games paint comparison chart lists these two as equivalents.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 17). Bad Moon Yellow is a little lighter, cooler than Zealot Yellow.
The same difference applies the other way round: Zealot Yellow is a little darker, 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 Zealot Yellow on the colour wheel See Bad Moon Yellow on the colour wheel
All matches: Zealot Yellow equivalents · Bad Moon Yellow equivalents