As character names:

U+A789 MODIFIER LETTER COLON character (꞉)

As raw characters:

꞉

As a string of HTML entities:

꞉

Decoder output:

Byte number 1 is decimal 240, hex 0xF0, octal \360, binary 11110000
This is the first byte of a 4 byte sequence.

Byte number 2 is decimal 138, hex 0x8A, octal \212, binary 10001010
This is continuation byte 1, expecting 2 more.

Byte number 3 is decimal 158, hex 0x9E, octal \236, binary 10011110
This is continuation byte 2, expecting 1 more.

Byte number 4 is decimal 137, hex 0x89, octal \211, binary 10001001
This is continuation byte 3, expecting 0 more.

U+A789	MODIFIER LETTER COLON
	* used as a tone letter in some orthographies
	* Budu (Congo), Sabaot (Kenya), and several Papua New Guinea languages
	x (colon - 003A)