you could perhaps take a screenshot of the editor and then use a color picker to get it.

Nobody knows hexademical colors by heart man. You're going to have to use a color picker. On windows, you take a screenshot with either Control + PrintScreen (Ctrl+PrtScr) and you Ctrl+V into a new file in Paint. On a phone, you just hold some buttons.

Save that, use an image color picker online (Google has literally hundreds) and pick the color from there.