Typewriter is the black in the line. Miss Mustard Seed describes it as an off-black or soft black. It is named for the black colour traditionally found on antique typewriters.
Mix Typewriter with any of the colours in the line to make them darker and more muted. For example, when mixed with Boxwood, a deep olive green can be achieved. Mix it with Grain Sack to make a perfect charcoal gray.