Briar Queen Chill vs Skull Linen

How close are they?

ΔE 17.4, loose: different enough that you should pick on purpose. Skull Linen is a little darker, more muted than Briar Queen Chill.

Can I use Skull Linen instead of Briar Queen Chill?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 17). Skull Linen is a little darker, more muted than Briar Queen Chill.

Can I use Briar Queen Chill instead of Skull Linen?

The same difference applies the other way round: Briar Queen Chill is a little lighter, 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.