As character names:

U+FE55 SMALL 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 143, hex 0x8F, octal \217, binary 10001111
This is continuation byte 1, expecting 2 more.

Byte number 3 is decimal 185, hex 0xB9, octal \271, binary 10111001
This is continuation byte 2, expecting 1 more.

Byte number 4 is decimal 149, hex 0x95, octal \225, binary 10010101
This is continuation byte 3, expecting 0 more.

U+FE55	SMALL COLON
	x (presentation form for vertical colon - FE13)
	# <small> 003A