Hot Pink vs Clear Red

How close are they?

ΔE 19.3, loose: different enough that you should pick on purpose. Clear Red is a little darker, much more saturated than Hot Pink.

Can I use Clear Red instead of Hot Pink?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 19). Clear Red is a little darker, much more saturated than Hot Pink.

Can I use Hot Pink instead of Clear Red?

The same difference applies the other way round: Hot Pink is a little lighter, much 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.