As character names:

U+00CB LATIN CAPITAL LETTER E WITH DIAERESIS character (Ë)

As raw characters:

Ë

As a string of HTML entities:

Ë

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 139, hex 0x8B, octal \213, binary 10001011
This is continuation byte 1, expecting 0 more.

U+00CB	LATIN CAPITAL LETTER E WITH DIAERESIS
	: 0045 0308