Potion Green vs Hemp BS4800/10B21

How close are they?

ΔE 12.7, fair: the same colour family, but not a straight swap. Hemp BS4800/10B21 is a little darker, more saturated, warmer than Potion Green.

Can I use Hemp BS4800/10B21 instead of Potion Green?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Hemp BS4800/10B21 is a little darker, more saturated, warmer than Potion Green.

Can I use Potion Green instead of Hemp BS4800/10B21?

The same difference applies the other way round: Potion Green is a little lighter, more muted, 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.