Leather White vs Linen White

How close are they?

ΔE 15.1, loose: different enough that you should pick on purpose. Linen White is noticeably lighter, more saturated than Leather White.

Can I use Linen White instead of Leather White?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 15). Linen White is noticeably lighter, more saturated than Leather White.

Can I use Leather White instead of Linen White?

The same difference applies the other way round: Leather White is noticeably darker, 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.