It's just a color name. Places that provide finishes to industry can tint to any color in my ginormous color fan sourced from a paint supplier with all the funny names. They also run under the radar of the general population, being targeted mostly at industry for a variety of reasons. Nasty solvents being one of them.
And FWIW, although sheen is often expressed in "degrees", it's actually referring to a percentage. It's the percentage of reflected light from a given surface measured with a Glossmeter. No kidding, there is such a tool! A glossy surface reflects a higher % than matte, for example. "Matte" or "dull" typically around 15-25% sheen although the "matte" part is largely at the discretion of manufacturer. There is no real standard for terms like "gloss", "semi-gloss" "satin" etc.