As character names:

U+23EF BLACK RIGHT-POINTING TRIANGLE WITH DOUBLE VERTICAL BAR character (⏯)

As raw characters:

⏯

As a string of HTML entities:

⏯

Decoder output:

Byte number 1 is decimal 226, hex 0xE2, octal \342, binary 11100010
This is the first byte of a 3 byte sequence.

Byte number 2 is decimal 143, hex 0x8F, octal \217, binary 10001111
This is continuation byte 1, expecting 1 more.

Byte number 3 is decimal 175, hex 0xAF, octal \257, binary 10101111
This is continuation byte 2, expecting 0 more.

U+23EF	BLACK RIGHT-POINTING TRIANGLE WITH DOUBLE VERTICAL BAR
	= play/pause toggle