Most brands have more colours than belong in a Word document. Pick the two or three you want to appear in headings, tables and accents, leave the rest for your website and marketing materials. Less is more here.
Colours are identified by hex codes, which are six-digit references like
#FF006B. Your brand guidelines or designer will have these. If you don't have access to them, you can pick colours directly from your website
using this free tool for Chrome and Edge.