As character names:

U+25C1 WHITE LEFT-POINTING 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 129, hex 0x81, octal \201, binary 10000001
This is continuation byte 2, expecting 0 more.

U+25C1	WHITE LEFT-POINTING TRIANGLE
	= z notation domain restriction