0xC3

0xC3 is a hexadecimal byte value equal to decimal 195. In computing, bytes are often represented in hex with the 0x prefix, and 0xC3 can appear in various contexts such as binary data, character encodings, and network protocols.

In UTF-8, 0xC3 is a lead byte of a two-byte sequence for code points in the range U+00C0 to U+00FF. The continuation byte that follows must be in the range 0x80 to 0xBF. For example, the sequence 0xC3 0x80 encodes U+00C0 (À), 0xC3 0x83 encodes U+00C3 (Ã), and 0xC3 0xBF encodes U+00FF (ÿ). This demonstrates how 0xC3 participates in representing characters from the Latin-1 Supplement set in UTF-8.

In ISO/IEC 8859-1 and Windows-1252, 0xC3 maps to the character Ã. Text that has been misinterpreted or double-encoded can produce sequences like é in place of é, reflecting decoding errors rather than the original character.

In practical use, 0xC3 may appear in debugging, data dumps, or encoding conversions. When parsing UTF-8 streams, seeing 0xC3 indicates the start of a two-byte sequence that should be followed by a valid continuation byte (0x80–0xBF); otherwise the sequence is invalid. As a single byte, 0xC3 is data with a fixed value, independent of endianness.