As character names:

U+00EF LATIN SMALL LETTER I WITH DIAERESIS character (ï)

As raw characters:

ï

As a string of HTML entities:

ï

Decoder output:

Byte number 1 is decimal 195, hex 0xC3, octal \303, binary 11000011
This is the first byte of a 2 byte sequence.

Byte number 2 is decimal 175, hex 0xAF, octal \257, binary 10101111
This is continuation byte 1, expecting 0 more.

U+00EF	LATIN SMALL LETTER I WITH DIAERESIS
	: 0069 0308