As character names:

U+233A APL FUNCTIONAL SYMBOL QUAD 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 140, hex 0x8C, octal \214, binary 10001100
This is continuation byte 1, expecting 1 more.

Byte number 3 is decimal 186, hex 0xBA, octal \272, binary 10111010
This is continuation byte 2, expecting 0 more.

U+233A	APL FUNCTIONAL SYMBOL QUAD DIAMOND
	x (white diamond in square - 26CB)