As character names:

U+25E3 BLACK LOWER LEFT TRIANGLE 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 151, hex 0x97, octal \227, binary 10010111
This is continuation byte 1, expecting 1 more.

Byte number 3 is decimal 163, hex 0xA3, octal \243, binary 10100011
This is continuation byte 2, expecting 0 more.

U+25E3	BLACK LOWER LEFT TRIANGLE
	x (lower left triangular medium shade - 1FB9F)