ℂ is the Unicode character DOUBLE-STRUCK CAPITAL C, code point U+2102 (decimal 8450) in the Letterlike Symbols block, added in Unicode 1.1. In HTML write ℂ, and in UTF-8 it is the 3 bytes E2 84 82.
Codes
| Where | How to write it |
|---|---|
| Code point | U+2102 |
| Decimal | 8450 |
| UTF-8 bytes | E2 84 82 |
| UTF-16 (big-endian) | 2102 |
| UTF-32 | 00002102 |
| HTML decimal | ℂ |
| HTML hex | ℂ |
| HTML named | ℂ ℂ |
| CSS | \2102 |
| JavaScript | \u2102 |
| JSON | \u2102 |
| Python | \u2102 |
| Python by name | \N{DOUBLE-STRUCK CAPITAL C} |
| Java, C# | \u2102 |
| Rust, Swift | \u{2102} |
| Go, C, C++ | \u2102 |
| URL (percent-encoded) | %E2%84%82 |
JavaScript and JSON strings store text as UTF-16, so this character is one code unit long. Python 3 strings count code points, so its length there is 1.
Properties
| Property | Value |
|---|---|
| Name | DOUBLE-STRUCK CAPITAL C |
| Code point | U+2102 (decimal 8450) |
| Block | Letterlike Symbols (U+2100–U+214F) |
| General category | Lu: Uppercase letter |
| Script | Common |
| Bidirectional class | L: Left-to-right |
| Mirrored in right-to-left text | No |
| First in Unicode version | 1.1 |
Decomposition
DOUBLE-STRUCK CAPITAL C has a compatibility decomposition (font) to the sequence below. NFKC and NFKD normalisation replace it with that sequence, which can change how text looks, so use them for search, not for storage.
Nearby in Letterlike Symbols
- ℀ U+2100 Account Of
- ℁ U+2101 Addressed To The Subject
- ℃ U+2103 Degree Celsius
- ℄ U+2104 Centre Line Symbol
- ℅ U+2105 Care Of
- ℆ U+2106 Cada Una
- ℇ U+2107 Euler Constant
- ℈ U+2108 Scruple
- ℉ U+2109 Degree Fahrenheit
- ℊ U+210A Script Small G
All 80 characters: Letterlike Symbols.
Official reference
Questions people ask
- What is the HTML code for ℂ?
- Use the named entity ℂ, or ℂ (decimal) or ℂ (hex).
- What is the UTF-8 encoding of U+2102?
- E2 84 82 (hex), 3 bytes. In a URL it is %E2%84%82.
- How do I write U+2102 in JavaScript or Python?
- JavaScript: \u2102. Python: \u2102.
Source
Unicode Character Database 18.0.0 (Unicode License v3); HTML entity names from the WHATWG HTML Standard (CC BY 4.0). The encodings above are computed from the code point and checked against Python's encoders. How the character looks depends on your fonts.
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