Alizarin Crimson Hue vs Mahogany Ink

How close are they?

ΔE 49.2, loose: different enough that you should pick on purpose. Mahogany Ink is a little darker, much more muted, cooler than Alizarin Crimson Hue.

Can I use Mahogany Ink instead of Alizarin Crimson Hue?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 49). Mahogany Ink is a little darker, much more muted, cooler than Alizarin Crimson Hue.

Can I use Alizarin Crimson Hue instead of Mahogany Ink?

The same difference applies the other way round: Alizarin Crimson Hue is a little 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.