0x255

0x255 is a hexadecimal integer literal commonly encountered in programming and computer documentation. The prefix 0x signals base-16 notation in languages influenced by C, such as C, C++, Java, JavaScript, and Python. When interpreted as hex, 0x255 equals decimal 597 and binary 0010 0101 0101. The value can be used in code as a numeric constant, in bitwise operations, or as a memory-address-like value in examples. Depending on the target system’s word size, 0x255 may require more than 8 bits: as a plain number it is 597; as a memory address on an 8-bit address space it would exceed a single byte, whereas on a 16- or 32-bit space it fits easily.

In practice, 0x255 often appears in introductory material to illustrate hexadecimal notation, bit masks, or address-oriented examples. In color encoding, hex notation is common, though 0x255 would typically be part of a larger value (for example, in a 24-bit or 32-bit color specification). As a general-purpose constant, 0x255 has no inherent meaning beyond its numeric value and is not associated with a universal standard or semantic property.

See also: hexadecimal notation, decimal, binary, bit masks, memory addresses, numeric literals.