ΔE 16.9, loose: different enough that you should pick on purpose. Green Zinc Chrom. is a little lighter, much more saturated, warmer than Highland Moss.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 17). Green Zinc Chrom. is a little lighter, much more saturated, warmer than Highland Moss.
The same difference applies the other way round: Highland Moss is a little darker, much 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.
See Highland Moss on the colour wheel See Green Zinc Chrom. on the colour wheel
All matches: Highland Moss equivalents · Green Zinc Chrom. equivalents