Hello Rick,
Yes, my car is 573G "Dunkelbordeauxrot" (dark Bordeaux red).
It's dark red, darker than 576 or its predecessor color code 516H.
It's a (dark) wine red with a touch of maroon (to brown).
However,
this color code is not original for your car but was only available until 1965.
It was succeeded by 542 "dark red" which is quite similar but a little more puple and not so brownish like my 573. Personally, I like the 542 a little bit more.
Sorry please for the extremely bad quality of the pic.
Best,
Achim
(no car anymore but parts and knowledge collector)