ΔE 17.6, loose: different enough that you should pick on purpose. Viridian Green is a little darker, cooler than Canvas.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 18). Viridian Green is a little darker, cooler than Canvas.
The same difference applies the other way round: Canvas is a little lighter, 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.
See Canvas on the colour wheel See Viridian Green on the colour wheel
All matches: Canvas equivalents · Viridian Green equivalents