As character names:

U+014C LATIN CAPITAL LETTER O WITH MACRON character (Ō)

As raw characters:

Ō

As a string of HTML entities:

Ō

Decoder output:

Byte number 1 is decimal 197, hex 0xC5, octal \305, binary 11000101
This is the first byte of a 2 byte sequence.

Byte number 2 is decimal 140, hex 0x8C, octal \214, binary 10001100
This is continuation byte 1, expecting 0 more.

U+014C	LATIN CAPITAL LETTER O WITH MACRON
	: 004F 0304