0x191F

0x191F is a hexadecimal literal commonly used in computing to denote the 16-bit value 0x191F. In decimal, this value is 6431, and in binary it is 00011001 00011111. The exact interpretation of this bit pattern depends on the software or hardware context in which it is used.

In programming languages that support hexadecimal literals, such as C, C++, Java, and JavaScript, the prefix 0x signals that the following digits form a base-16 number. Such literals are widely used to express constants, memory addresses, register values, and bitmasks in low-level code and embedded systems.

Common contexts where 0x191F might appear include hardware register configuration, color representations in some 16-bit color schemes, or protocol fields that use 16-bit identifiers. For example, as a bitmask, the lower byte 0x1F provides five settable flags, while the higher byte 0x19 contributes additional flag bits; the overall meaning depends on how the bits are defined by the surrounding software.

Because hexadecimal notation is compact and aligns with binary data layouts, values like 0x191F are frequently encountered in debugging, firmware development, and systems programming. The term is primarily a numeric constant rather than a concept with a fixed, universal meaning.