# 𝐎 U+1D40E MATHEMATICAL BOLD CAPITAL O

Heavy bold serif capital O, used for stylized bold text in usernames and posts, and for bold variables in math.

| | |
|---|---|
| Character | `𝐎` |
| Codepoint | U+1D40E |
| Name | MATHEMATICAL BOLD CAPITAL O |
| Block | [Mathematical Alphanumeric Symbols](https://unicodekit.com/block/mathematical-alphanumeric-symbols) |
| Script | Common |
| Category | Uppercase Letter (Lu) |
| Unicode version | 3.1 |
| HTML | `𝐎` `𝐎` |
| CSS | `\1D40E` |
| JavaScript | `\u{1D40E}` |
| UTF-8 | F0 9D 90 8E |
| UTF-16 | D835 DC0E |
| Decomposition | font U+004F |

## Related characters

- 𝐍 [U+1D40D MATHEMATICAL BOLD CAPITAL N](https://unicodekit.com/char/1D40D)
- 𝐏 [U+1D40F MATHEMATICAL BOLD CAPITAL P](https://unicodekit.com/char/1D40F)
- 𝐌 [U+1D40C MATHEMATICAL BOLD CAPITAL M](https://unicodekit.com/char/1D40C)
- 𝐐 [U+1D410 MATHEMATICAL BOLD CAPITAL Q](https://unicodekit.com/char/1D410)
- 𝐋 [U+1D40B MATHEMATICAL BOLD CAPITAL L](https://unicodekit.com/char/1D40B)
- 𝐑 [U+1D411 MATHEMATICAL BOLD CAPITAL R](https://unicodekit.com/char/1D411)
- 𝐊 [U+1D40A MATHEMATICAL BOLD CAPITAL K](https://unicodekit.com/char/1D40A)
- 𝐒 [U+1D412 MATHEMATICAL BOLD CAPITAL S](https://unicodekit.com/char/1D412)
- 𝐉 [U+1D409 MATHEMATICAL BOLD CAPITAL J](https://unicodekit.com/char/1D409)
- 𝐓 [U+1D413 MATHEMATICAL BOLD CAPITAL T](https://unicodekit.com/char/1D413)
- 𝐈 [U+1D408 MATHEMATICAL BOLD CAPITAL I](https://unicodekit.com/char/1D408)
- 𝐔 [U+1D414 MATHEMATICAL BOLD CAPITAL U](https://unicodekit.com/char/1D414)

Page: https://unicodekit.com/char/1D40E · JSON: https://unicodekit.com/characters/1D40E