A white letter O in the middle of a red square.symbol representing Blood Type O.ย Used to show that you have a blood type that is a universal donor.
| Category | โ Symbols |
| Subgroup | Alphanum |
| Codepoints | 1F17E FE0F |
| Shortcode | :o2: |
| HTML hex | 🅾️ |
| HTML dec | 🅾️ |
| URL escape code | %F0%9F%85%BE%EF%B8%8F |
| Punycode | xn--f47h |
| Bytes (UTF-8) | F0 9F 85 BE EF B8 8F |
| JavaScript, JSON, Java | \uD83C\uDD7E\uFE0F |
| C, C++, Python | \U0001f17e\uFE0F |
| CSS | \01F17E \FE0F |
| PHP, Ruby | \u{1F17E}\u{FE0F} |
| Perl | \x{1F17E}\x{FE0F} |
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