Iosan Green vs Lime Green

How close are they?

ΔE 23.6, loose: different enough that you should pick on purpose. Lime Green is a little darker, more muted, warmer than Iosan Green.

Can I use Lime Green instead of Iosan Green?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 24). Lime Green is a little darker, more muted, warmer than Iosan Green.

Can I use Iosan Green instead of Lime Green?

The same difference applies the other way round: Iosan Green is a little lighter, more saturated, 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.