As character names:

U+1E4E LATIN CAPITAL LETTER O WITH TILDE AND DIAERESIS character (Ṏ)

As raw characters:

Ṏ

As a string of HTML entities:

Ṏ

Decoder output:

Byte number 1 is decimal 225, hex 0xE1, octal \341, binary 11100001
This is the first byte of a 3 byte sequence.

Byte number 2 is decimal 185, hex 0xB9, octal \271, binary 10111001
This is continuation byte 1, expecting 1 more.

Byte number 3 is decimal 142, hex 0x8E, octal \216, binary 10001110
This is continuation byte 2, expecting 0 more.

U+1E4E	LATIN CAPITAL LETTER O WITH TILDE AND DIAERESIS
	: 00D5 0308