Hydra Turquoise vs Trollblood Base

How close are they?

ΔE 7.2, close: similar, with a visible difference side by side. Trollblood Base is more muted, cooler than Hydra Turquoise.

Can I use Trollblood Base instead of Hydra Turquoise?

Usually, if you are not matching paint already on the model. Close match (ΔE 7). Trollblood Base is more muted, cooler than Hydra Turquoise.

Can I use Hydra Turquoise instead of Trollblood Base?

The same difference applies the other way round: Hydra Turquoise is more saturated, warmer.

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.