Code point
U+258E
Glyph appearance depends on your fonts.
U+258E
SoU+258E LEFT ONE QUARTER BLOCK is a Unicode 16.0.0 character in the Other Symbol category. It belongs to the Block Elements block.
Choose the representation you need, then copy its value.
U+258E
9614
▎
▎
E2 96 8E
258E
0000258E
%E2%96%8E
\u258E
\u258E
\u258E
\258E