Code point
U+257A
Glyph appearance depends on your fonts.
U+257A
SoU+257A BOX DRAWINGS HEAVY 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+257A
9594
╺
╺
E2 95 BA
257A
0000257A
%E2%95%BA
\u257A
\u257A
\u257A
\257A