Permanent Green Light vs Ink Green

How close are they?

ΔE 11.1, fair: the same colour family, but not a straight swap. Ink Green is a little darker, more muted than Permanent Green Light.

Can I use Ink Green instead of Permanent Green Light?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Ink Green is a little darker, more muted than Permanent Green Light.

Can I use Permanent Green Light instead of Ink Green?

The same difference applies the other way round: Permanent Green Light is a little 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.