Sap Green Hue vs Ink Sepia

How close are they?

ΔE 23.8, loose: different enough that you should pick on purpose. Ink Sepia is noticeably darker, much more muted, warmer than Sap Green Hue.

Can I use Ink Sepia instead of Sap Green Hue?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 24). Ink Sepia is noticeably darker, much more muted, warmer than Sap Green Hue.

Can I use Sap Green Hue instead of Ink Sepia?

The same difference applies the other way round: Sap Green Hue is noticeably lighter, much 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.