Double-struck ("blackboard bold") text uses the Mathematical Double-Struck block — but seven capitals (C, H, N, P, Q, R, Z) are borrowed from older Letterlike Symbols code points instead, because those are the standard math symbols for number sets (ℂ complex, ℕ naturals, ℝ reals...).
01 Step by step, per platform
A real, followable procedure for every platform — not a thin restatement of the shortcut.
How it works
- Double-struck A is U+1D538 (𝔸), double-struck a is U+1D552 (𝕒).
- C, H, N, P, Q, R, Z instead use ℂ ℍ ℕ ℙ ℚ ℝ ℤ (U+2102, U+210D, U+2115, U+2119, U+211A, U+211D, U+2124) — the same symbols mathematicians use for the complex, quaternion, natural, integer-positive, rational, real, and integer number sets.
02 FAQ
Why do ℂ, ℕ, ℝ and ℤ look slightly bolder or different from other double-struck letters?
They're literally different, older Unicode characters — the standard math symbols for number sets — reused for this effect rather than coming from the main double-struck alphabet block.
Will "fancy text" work everywhere I paste it?
Mostly, since it's just Unicode text — but it isn't accessible: screen readers often can't pronounce these look-alike letters properly, and browser find-in-page / site search won't match them against the real word, since each is a different code point from the plain letter it resembles.