Code point
U+211C
Glyph appearance depends on your fonts.
U+211C
Lu<font> 0052U+211C BLACK-LETTER CAPITAL R is a Unicode 16.0.0 character in the Uppercase Letter category. It belongs to the Letterlike Symbols block.
Choose the representation you need, then copy its value.
U+211C
8476
ℜ
ℜ
ℜ
E2 84 9C
211C
0000211C
%E2%84%9C
\u211C
\u211C
\u211C
\211C