Talisman Teal vs Grass Green

How close are they?

ΔE 21.4, loose: different enough that you should pick on purpose. Grass Green is noticeably darker, more muted than Talisman Teal.

Can I use Grass Green instead of Talisman Teal?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 21). Grass Green is noticeably darker, more muted than Talisman Teal.

Can I use Talisman Teal instead of Grass Green?

The same difference applies the other way round: Talisman Teal is noticeably lighter, more saturated.

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.