ΔE 8.9, close: similar, with a visible difference side by side. Chromium Oxide Green Dark is a little lighter, warmer than Dark Angels Green. They are different kinds of paint: Citadel Dark Angels Green is a one-coat contrast-style paint and Golden Chromium Oxide Green Dark is an opaque base/layer 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). Chromium Oxide Green Dark is a little lighter, warmer than Dark Angels Green. They are different kinds of paint.
The same difference applies the other way round: Dark Angels Green is a little darker, 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.
See Dark Angels Green on the colour wheel See Chromium Oxide Green Dark on the colour wheel
All matches: Dark Angels Green equivalents · Chromium Oxide Green Dark equivalents