ΔE 8.4, close: similar, with a visible difference side by side. Kraken Green is cooler than Castellan Green.
Usually, if you are not matching paint already on the model. Close match (ΔE 8). Kraken Green is cooler than Castellan Green.
The same difference applies the other way round: Castellan Green is 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.
See Castellan Green on the colour wheel See Kraken Green on the colour wheel
All matches: Castellan Green equivalents · Kraken Green equivalents