Bubblegum Crisis vs Miami Sunset

How close are they?

ΔE 19.5, loose: different enough that you should pick on purpose. Miami Sunset is noticeably darker, more saturated than Bubblegum Crisis.

Can I use Miami Sunset instead of Bubblegum Crisis?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 19). Miami Sunset is noticeably darker, more saturated than Bubblegum Crisis.

Can I use Bubblegum Crisis instead of Miami Sunset?

The same difference applies the other way round: Bubblegum Crisis 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.