Matt Blood Red vs Mahogany Ink

How close are they?

ΔE 50.2, loose: different enough that you should pick on purpose. Mahogany Ink is noticeably darker, much more muted, cooler than Matt Blood Red.

Can I use Mahogany Ink instead of Matt Blood Red?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 50). Mahogany Ink is noticeably darker, much more muted, cooler than Matt Blood Red.

Can I use Matt Blood Red instead of Mahogany Ink?

The same difference applies the other way round: Matt Blood Red is noticeably lighter, much more saturated, warmer.

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.