The flag for Colombia, which may show as the letters CO on some platforms.
The Flag: Colombia emoji is a flag sequence combining ? Regional Indicator Symbol Letter C and ? Regional Indicator Symbol Letter O. These display as a single emoji on supported platforms.
Flag: Colombia was added to Emoji 1.0 in 2015.
U+1F1E8
U+1F1F4
?? Regional indicator symbol letter c
?? Regional indicator symbol letter o