| HTML Entity (dec) | ⬛ |
| HTML Entity (hex) | ⬛ |
| UTF-8 (hex) | 0xe2ac9b / 0xe2 0xac 0x9b (3 bytes) |
| UTF-8 (dec) | 226, 172, 155 (3 bytes) |
| UTF-16-BE (hex) | 0x2b1b / 0x2b 0x1b (2 bytes) |
| UTF-16-BE (dec) | 43, 27 (2 bytes) |
| UTF-32-BE (hex) | 0x2b1b / 0x00 0x00 0x2b 0x1b (4 bytes) |
| UTF-32-BE (dec) | 0, 0, 43, 27 (4 bytes) |
| C/C++/Java source code | "\u2b1b" |
| Python source code | "\u2b1b" |