Aeldari Emerald vs Clear Viridian

How close are they?

ΔE 6.8, close: similar, with a visible difference side by side. Clear Viridian is a little darker than Aeldari Emerald. They are different kinds of paint: Citadel Aeldari Emerald is a one-coat contrast-style paint and Reaper Clear Viridian is an ink, glaze or transparent paint, so they won’t behave the same on the model even where the colour is close.

Can I use Clear Viridian instead of Aeldari Emerald?

Usually, if you are not matching paint already on the model. Close match (ΔE 7). Clear Viridian is a little darker than Aeldari Emerald. They are different kinds of paint.

Can I use Aeldari Emerald instead of Clear Viridian?

The same difference applies the other way round: Aeldari Emerald is a little lighter.

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.