Crusader Skin vs Snakebite Leather

How close are they?

ΔE 21.1, loose: different enough that you should pick on purpose. Snakebite Leather is noticeably darker, more saturated than Crusader Skin.

Can I use Snakebite Leather instead of Crusader Skin?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 21). Snakebite Leather is noticeably darker, more saturated than Crusader Skin.

Can I use Crusader Skin instead of Snakebite Leather?

The same difference applies the other way round: Crusader Skin is noticeably lighter, 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.