Code point
U+2572
Glyph appearance depends on your fonts.
U+2572
SoU+2572 BOX DRAWINGS LIGHT DIAGONAL UPPER LEFT TO LOWER RIGHT is a Unicode 16.0.0 character in the Other Symbol category. It belongs to the Box Drawing block.
Choose the representation you need, then copy its value.
U+2572
9586
╲
╲
E2 95 B2
2572
00002572
%E2%95%B2
\u2572
\u2572
\u2572
\2572