O Button (Blood Type) Emoji to Copy and Paste 🅾
A symbol representing Blood Type O. Displayed as the letter O on a red background.
O Button (Blood Type) became permitted and joined Unicode 6.0 in 2010 and was named “Negative Squared Latin Capital Letter O” in addition to joining the Emoji Keyboard1.0 in 2015.
This emoji is part of the Symbols category. Cut and paste on any platform and any device. No downloads or registration required.