Code point
U+301B
Glyph appearance depends on your fonts.
U+301B
PeU+301B RIGHT WHITE SQUARE BRACKET is a Unicode 16.0.0 character in the Close Punctuation category. It belongs to the CJK Symbols and Punctuation block.
Choose the representation you need, then copy its value.
U+301B
12315
〛
〛
E3 80 9B
301B
0000301B
%E3%80%9B
\u301B
\u301B
\u301B
\301B