ΔE 9.0, close: similar, with a visible difference side by side. Naphthol Red Medium is more saturated than Evil Sunz Scarlet.
Usually, if you are not matching paint already on the model. Close match (ΔE 9). Naphthol Red Medium is more saturated than Evil Sunz Scarlet.
The same difference applies the other way round: Evil Sunz Scarlet is more muted.
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 Evil Sunz Scarlet on the colour wheel See Naphthol Red Medium on the colour wheel
All matches: Evil Sunz Scarlet equivalents · Naphthol Red Medium equivalents