Guardian Green vs Field Green-Grey

How close are they?

ΔE 14.4, fair: the same colour family, but not a straight swap. Field Green-Grey is noticeably darker, more saturated, warmer than Guardian Green.

Can I use Field Green-Grey instead of Guardian Green?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Field Green-Grey is noticeably darker, more saturated, warmer than Guardian Green.

Can I use Guardian Green instead of Field Green-Grey?

The same difference applies the other way round: Guardian Green is noticeably 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.