Code point
U+27EC
Glyph appearance depends on your fonts.
U+27EC
PsU+27EC MATHEMATICAL LEFT WHITE TORTOISE SHELL BRACKET is a Unicode 16.0.0 character in the Open Punctuation category. It belongs to the Miscellaneous Mathematical Symbols-A block.
Choose the representation you need, then copy its value.
U+27EC
10220
⟬
⟬
⟬
E2 9F AC
27EC
000027EC
%E2%9F%AC
\u27EC
\u27EC
\u27EC
\27EC