Code point
U+3294
Glyph appearance depends on your fonts.
U+3294
So<circle> 540DU+3294 CIRCLED IDEOGRAPH NAME is a Unicode 16.0.0 character in the Other Symbol category. It belongs to the Enclosed CJK Letters and Months block.
Choose the representation you need, then copy its value.
U+3294
12948
㊔
㊔
E3 8A 94
3294
00003294
%E3%8A%94
\u3294
\u3294
\u3294
\3294