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