ΔE 21.7, loose: different enough that you should pick on purpose. Sand Grey is noticeably darker, much more saturated than Praxeti White.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 22). Sand Grey is noticeably darker, much more saturated than Praxeti White.
The same difference applies the other way round: Praxeti White is noticeably lighter, much more muted.
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 Praxeti White on the colour wheel See Sand Grey on the colour wheel
All matches: Praxeti White equivalents · Sand Grey equivalents