Code point
U+FF3B
Glyph appearance depends on your fonts.
U+FF3B
Ps<wide> 005BU+FF3B FULLWIDTH LEFT SQUARE BRACKET is a Unicode 16.0.0 character in the Open Punctuation category. It belongs to the Halfwidth and Fullwidth Forms block.
Choose the representation you need, then copy its value.
U+FF3B
65339
[
[
EF BC BB
FF3B
0000FF3B
%EF%BC%BB
\uFF3B
\uFF3B
\uFF3B
\FF3B