Bad Moon Yellow vs Misted Yellow

How close are they?

ΔE 49.3, loose: different enough that you should pick on purpose. Misted Yellow is noticeably darker, much more muted, warmer than Bad Moon Yellow.

Can I use Misted Yellow instead of Bad Moon Yellow?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 49). Misted Yellow is noticeably darker, much more muted, warmer than Bad Moon Yellow.

Can I use Bad Moon Yellow instead of Misted Yellow?

The same difference applies the other way round: Bad Moon Yellow is noticeably lighter, much more saturated, 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.