As character names:

U+1FB9F LOWER LEFT TRIANGULAR MEDIUM SHADE 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 174, hex 0xAE, octal \256, binary 10101110
This is continuation byte 2, expecting 1 more.

Byte number 4 is decimal 159, hex 0x9F, octal \237, binary 10011111
This is continuation byte 3, expecting 0 more.

U+1FB9F	LOWER LEFT TRIANGULAR MEDIUM SHADE
	x (black lower left triangle - 25E3)