Kakophoni Purple vs Hexed Lichen

How close are they?

ΔE 17.1, loose: different enough that you should pick on purpose. Hexed Lichen is a little darker, much more muted, cooler than Kakophoni Purple.

Can I use Hexed Lichen instead of Kakophoni Purple?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 17). Hexed Lichen is a little darker, much more muted, cooler than Kakophoni Purple.

Can I use Kakophoni Purple instead of Hexed Lichen?

The same difference applies the other way round: Kakophoni Purple 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.