Code point
U+25A9
Glyph appearance depends on your fonts.
U+25A9
SoU+25A9 SQUARE WITH DIAGONAL CROSSHATCH FILL is a Unicode 16.0.0 character in the Other Symbol category. It belongs to the Geometric Shapes block.
Choose the representation you need, then copy its value.
U+25A9
9641
▩
▩
E2 96 A9
25A9
000025A9
%E2%96%A9
\u25A9
\u25A9
\u25A9
\25A9