O Button (Blood Type) Emoji to Copy and Paste ๐Ÿ…พ

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 โ€œNegative Squared Latin Capital Letter Oโ€ 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.