Change material name

I design interiors. I use HEX input to change colors as desired, e.g., #757C91, so I can get the colors I want. I would like to change the named of the material from “Default Material” to (usually) a Sherwin Williams paint name, e.g., “Soulful Blue”. I currently have a library of Default Material uniquely identified by HEX code, but I can’t remember all the color names by HEX.