Castellan Green vs Bestial Green

How close are they?

ΔE 22.9, loose: different enough that you should pick on purpose. Bestial Green is noticeably lighter, much more muted, warmer than Castellan Green.

Can I use Bestial Green instead of Castellan Green?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 23). Bestial Green is noticeably lighter, much more muted, warmer than Castellan Green.

Can I use Castellan Green instead of Bestial Green?

The same difference applies the other way round: Castellan Green is noticeably darker, much more saturated, cooler.

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.