| HTML Entity (dec) | ■ |
| HTML Entity (hex) | ■ |
| UTF-8 (hex) | 0xe296a0 / 0xe2 0x96 0xa0 (3 bytes) |
| UTF-8 (dec) | 226, 150, 160 (3 bytes) |
| UTF-16-BE (hex) | 0x25a0 / 0x25 0xa0 (2 bytes) |
| UTF-16-BE (dec) | 37, 160 (2 bytes) |
| UTF-32-BE (hex) | 0x25a0 / 0x00 0x00 0x25 0xa0 (4 bytes) |
| UTF-32-BE (dec) | 0, 0, 37, 160 (4 bytes) |
| C/C++/Java source code | "\u25a0" |
| Python source code | "\u25a0" |