| HTML Entity (dec) | ◉ |
| HTML Entity (hex) | ◉ |
| UTF-8 (hex) | 0xe29789 / 0xe2 0x97 0x89 (3 bytes) |
| UTF-8 (dec) | 226, 151, 137 (3 bytes) |
| UTF-16-BE (hex) | 0x25c9 / 0x25 0xc9 (2 bytes) |
| UTF-16-BE (dec) | 37, 201 (2 bytes) |
| UTF-32-BE (hex) | 0x25c9 / 0x00 0x00 0x25 0xc9 (4 bytes) |
| UTF-32-BE (dec) | 0, 0, 37, 201 (4 bytes) |
| C/C++/Java source code | "\u25c9" |
| Python source code | "\u25c9" |