| HTML Entity (dec) | ▤ | 
| HTML Entity (hex) | ▤ | 
| UTF-8 (hex) | 0xe296a4 / 0xe2 0x96 0xa4 (3 bytes) | 
| UTF-8 (dec) | 226, 150, 164 (3 bytes) | 
| UTF-16-BE (hex) | 0x25a4 / 0x25 0xa4 (2 bytes) | 
| UTF-16-BE (dec) | 37, 164 (2 bytes) | 
| UTF-32-BE (hex) | 0x25a4 / 0x00 0x00 0x25 0xa4 (4 bytes) | 
| UTF-32-BE (dec) | 0, 0, 37, 164 (4 bytes) | 
| C/C++/Java source code | "\u25a4" | 
| Python source code | "\u25a4" |