ΔE 18.6, loose: different enough that you should pick on purpose. Light Bismuth Yellow is a little lighter, much more muted, cooler than Moon Dust.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 19). Light Bismuth Yellow is a little lighter, much more muted, cooler than Moon Dust.
The same difference applies the other way round: Moon Dust is a little darker, much 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 Moon Dust on the colour wheel See Light Bismuth Yellow on the colour wheel
All matches: Moon Dust equivalents · Light Bismuth Yellow equivalents