Emperor's Children vs Pink Horror

How close are they?

ΔE 17.0, loose: different enough that you should pick on purpose. Pink Horror is noticeably darker, more saturated than Emperor's Children.

Can I use Pink Horror instead of Emperor's Children?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 17). Pink Horror is noticeably darker, more saturated than Emperor's Children.

Can I use Emperor's Children instead of Pink Horror?

The same difference applies the other way round: Emperor's Children 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.