As character names:

U+1F5DB DECREASE FONT SIZE SYMBOL 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 159, hex 0x9F, octal \237, binary 10011111
This is continuation byte 1, expecting 2 more.

Byte number 3 is decimal 151, hex 0x97, octal \227, binary 10010111
This is continuation byte 2, expecting 1 more.

Byte number 4 is decimal 155, hex 0x9B, octal \233, binary 10011011
This is continuation byte 3, expecting 0 more.

U+1F5DB	DECREASE FONT SIZE SYMBOL