As character names:

U+01E3 LATIN SMALL LETTER AE WITH MACRON character (ǣ)

As raw characters:

ǣ

As a string of HTML entities:

ǣ

Decoder output:

Byte number 1 is decimal 199, hex 0xC7, octal \307, binary 11000111
This is the first byte of a 2 byte sequence.

Byte number 2 is decimal 163, hex 0xA3, octal \243, binary 10100011
This is continuation byte 1, expecting 0 more.

U+01E3	LATIN SMALL LETTER AE WITH MACRON
	* Old Norse, Old English
	: 00E6 0304