ΔE 9.4, close: similar, with a visible difference side by side. Bright Green is warmer than Hemp BS4800/10B21.
Usually, if you are not matching paint already on the model. Close match (ΔE 9). Bright Green is warmer than Hemp BS4800/10B21.
The same difference applies the other way round: Hemp BS4800/10B21 is 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 Hemp BS4800/10B21 on the colour wheel See Bright Green on the colour wheel
All matches: Hemp BS4800/10B21 equivalents · Bright Green equivalents