Canopy Green vs Craven Yellow

How close are they?

ΔE 22.8, loose: different enough that you should pick on purpose. Craven Yellow is noticeably lighter, more saturated, warmer than Canopy Green.

Can I use Craven Yellow instead of Canopy Green?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 23). Craven Yellow is noticeably lighter, more saturated, warmer than Canopy Green.

Can I use Canopy Green instead of Craven Yellow?

The same difference applies the other way round: Canopy Green is noticeably darker, 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.