0xE3

0xE3 is a hexadecimal literal commonly used in computing to denote the base-16 value of a byte or word. The prefix 0x signals hexadecimal notation, and the two hex digits E3 correspond to the decimal value 227. In many programming languages, 0xE3 can appear in source code as a literal for a constant, a bitmask, an address, or a byte value.

In character encoding contexts, the byte 0xE3 maps to the character “ã” in ISO-8859-1 (Latin-1) and Windows-1252, which corresponds to the Unicode code point U+00E3. This mapping means that 0xE3 represents the same character in these encodings, even though Unicode uses a different representation internally.

Regarding UTF-8, 0xE3 is not the standalone encoding of a specific character. In UTF-8, the code point U+00E3 is encoded as two bytes: 0xC3 0xA3. The byte 0xE3, by itself, would serve as a leading byte in a three-byte UTF-8 sequence for code points in the range U+0100 to U+FFFF; the complete character would require two additional continuation bytes. Thus, 0xE3 alone does not uniquely identify a single UTF-8 character.

Applications of 0xE3 include use as a color channel value in hex color specifications (where each channel ranges from 0 to 255), in low-level data representations, and in hex escapes for character references in HTML and other formats. See also hex notation, Unicode, and common character encodings.

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