As character names:

U+259E QUADRANT UPPER RIGHT AND LOWER LEFT 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 158, hex 0x9E, octal \236, binary 10011110
This is continuation byte 2, expecting 0 more.

U+259E	QUADRANT UPPER RIGHT AND LOWER LEFT
	x (checker board - 1F67E)
	x (inverse checker board fill - 1FB96)