You don't need one. Type your codes above and they print. Load a library only if you already keep a list of codes and hex values in a spreadsheet — then empty code boxes get filled in for you.
What the file needs: one color per row, with a code and a hex value. A header row and extra columns are fine.
Code,HEX
OLV-04,#738961
NVY-02,#1B253B
Nothing ships with the tool. Every code on your spec sheets is your own data.