0xD99

0xD99 is the hexadecimal representation of the decimal number 3481. In many programming languages, the prefix 0x indicates that the following digits are base-16. The hex digits D, 9, and 9 encode the value, which equals 3481 in decimal.

In code, 0xD99 can appear as a numeric constant in calculations, as a bit mask, as a memory address offset, or as an initialization value. The exact interpretation depends on the language, the data type, and the context in which it is used, including considerations of width and signedness.

Color coding is a related area where hexadecimal notation is common, though 0xD99 itself is not a standard CSS color notation. CSS and many design tools typically use color formats like #RGB or #RRGGBB. For example, the three-digit shorthand #D99 expands to the six-digit color #DD9999. The prefix 0x is not part of standard CSS color syntax.

In documentation and discussion, 0xD99 is often cited as a concrete example of a hex literal or used to illustrate hexadecimal arithmetic and conversions. It does not refer to a widely recognized project, protocol, or constant beyond its role as a numeric value in hexadecimal form.

See also: hexadecimal notation; hex literals; color code notation.