ΔE 9.1, close: similar, with a visible difference side by side. Phthalo Green (Yellow Shade) is cooler than Gremlin Green. They are different kinds of paint: Army Painter Gremlin Green is an opaque base/layer paint and Golden Phthalo Green (Yellow Shade) is an ink, glaze or transparent paint, so they won’t behave the same on the model even where the colour is close.
Usually, if you are not matching paint already on the model. Close match (ΔE 9). Phthalo Green (Yellow Shade) is cooler than Gremlin Green. They are different kinds of paint.
The same difference applies the other way round: Gremlin 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 Gremlin Green on the colour wheel See Phthalo Green (Yellow Shade) on the colour wheel
All matches: Gremlin Green equivalents · Phthalo Green (Yellow Shade) equivalents