ΔE 7.9, close: similar, with a visible difference side by side. Flat Green is more muted, warmer than Uniform Green Base FS-34128.
Usually, if you are not matching paint already on the model. Close match (ΔE 8). Flat Green is more muted, warmer than Uniform Green Base FS-34128.
The same difference applies the other way round: Uniform Green Base FS-34128 is more saturated, 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 Uniform Green Base FS-34128 on the colour wheel See Flat Green on the colour wheel
All matches: Uniform Green Base FS-34128 equivalents · Flat Green equivalents