ΔE 9.4, close: similar, with a visible difference side by side. Warm Yellow is a little darker, warmer than Bad Moon Yellow.
✓ Herrick Games paint comparison chart lists these two as equivalents.
Usually, if you are not matching paint already on the model. Close match (ΔE 9). Warm Yellow is a little darker, warmer than Bad Moon Yellow.
The same difference applies the other way round: Bad Moon Yellow is a little lighter, 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 Bad Moon Yellow on the colour wheel See Warm Yellow on the colour wheel
All matches: Bad Moon Yellow equivalents · Warm Yellow equivalents