Not really, because the dark yellow (not brown) is used... it's similar, but not the same in most terminals... brown as dark yellow for cga was a kind of short to a different color mix than the natural position which most terminals now use... actual screen effectiveness/brightness is different as well.

Kind of anal about this since I started with a lot of CGA and EGA displays when I was in my late teens and early 20s and relatively involved in the ANSi art scene.

Here's a related project I'm working on for playing doors in a web browser.

https://github.com/bbs-land/webterm-dos-ansi