Code point
U+2553
Glyph appearance depends on your fonts.
U+2553
SoU+2553 BOX DRAWINGS DOWN DOUBLE AND RIGHT SINGLE 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+2553
9555
╓
╓
╓
E2 95 93
2553
00002553
%E2%95%93
\u2553
\u2553
\u2553
\2553