As character names:

U+2B26 WHITE MEDIUM DIAMOND 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 172, hex 0xAC, octal \254, binary 10101100
This is continuation byte 1, expecting 1 more.

Byte number 3 is decimal 166, hex 0xA6, octal \246, binary 10100110
This is continuation byte 2, expecting 0 more.

U+2B26	WHITE MEDIUM DIAMOND
	x (white diamond - 25C7)
	x (alchemical symbol for soap - 1F754)