ΔE 16.6, loose: different enough that you should pick on purpose. White is noticeably lighter, more muted than Leather White.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 17). White is noticeably lighter, more muted than Leather White.
The same difference applies the other way round: Leather White is noticeably darker, 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 Leather White on the colour wheel See White on the colour wheel
All matches: Leather White equivalents · White equivalents