ΔE 6.9, close: similar, with a visible difference side by side. Smoke Ink is more saturated than Matt Satin Black.
Usually, if you are not matching paint already on the model. Close match (ΔE 7). Smoke Ink is more saturated than Matt Satin Black.
The same difference applies the other way round: Matt Satin Black 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 Matt Satin Black on the colour wheel See Smoke Ink on the colour wheel
All matches: Matt Satin Black equivalents · Smoke Ink equivalents