ΔE 16.7, loose: different enough that you should pick on purpose. Sandy Yellow is noticeably darker, more saturated, warmer than Moon Dust.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 17). Sandy Yellow is noticeably darker, more saturated, warmer than Moon Dust.
The same difference applies the other way round: Moon Dust is noticeably lighter, more muted, 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 Moon Dust on the colour wheel See Sandy Yellow on the colour wheel
All matches: Moon Dust equivalents · Sandy Yellow equivalents