As character names:

U+25A7 SQUARE WITH UPPER LEFT TO LOWER RIGHT FILL 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 150, hex 0x96, octal \226, binary 10010110
This is continuation byte 1, expecting 1 more.

Byte number 3 is decimal 167, hex 0xA7, octal \247, binary 10100111
This is continuation byte 2, expecting 0 more.

U+25A7	SQUARE WITH UPPER LEFT TO LOWER RIGHT FILL
	x (upper left to lower right fill - 1FB98)