Biel-Tan Green vs Moss Green

How close are they?

ΔE 21.3, loose: different enough that you should pick on purpose. Moss Green is noticeably lighter, more muted, cooler than Biel-Tan Green.

Can I use Moss Green instead of Biel-Tan Green?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 21). Moss Green is noticeably lighter, more muted, cooler than Biel-Tan Green.

Can I use Biel-Tan Green instead of Moss Green?

The same difference applies the other way round: Biel-Tan Green is noticeably darker, more saturated, 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.