Turbo vs Crimson Magenta

How close are they?

ΔE 16.9, loose: different enough that you should pick on purpose. Crimson Magenta is noticeably darker, more saturated than Turbo.

Can I use Crimson Magenta instead of Turbo?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 17). Crimson Magenta is noticeably darker, more saturated than Turbo.

Can I use Turbo instead of Crimson Magenta?

The same difference applies the other way round: Turbo 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.