U+3010 "【" Left Black Lenticular Bracket Unicode Character

U+3010 "【" Left Black Lenticular Bracket is a typographic symbol primarily used in East Asian scripts, most notably in Chinese, Japanese, and Korean text, to enclose or highlight supplementary information, such as titles, headings, or annotations. Its distinctive shape features heavy, rounded ends that resemble a black lentil or pill, giving it a bold and visually clear appearance compared to standard brackets. In practice, it often pairs with its counterpart U+3011 "】" Right Black Lenticular Bracket to form sets that mark off comments, quotations, or metadata in contexts like dictionaries, legal documents, or digital formatting, and it is also commonly seen in manga or other media for emphasis or stylistic effect.

General Properties

Code Point	U+3010
Version Added	1.1
Name	Left Black Lenticular Bracket
Unicode 1.0 Name	Opening Black Lenticular Bracket
Block	CJK Symbols and Punctuation
General Category	Open Punctuation
Canonical Combining Class	Not Reordered
Bidirectional Class	Other Neutral
Mirrored	Yes
Mirrored Character	"】" U+3011 Right Black Lenticular Bracket
Bidirectional Paired Bracket Type	Open
Bidirectional Paired Bracket	"】" U+3011 Right Black Lenticular Bracket

Encodings

HTML Decimal Encoding	【
HTML Hex Encoding	【
UTF-8 Encoding	0xE3 0x80 0x90
UTF-16 Encoding	0x3010
UTF-32 Encoding	0x00003010
C/C++/Java Escape	\u3010

Unicode Properties

NFC Quick Check	Yes
NFD Quick Check	Yes
NFKC Quick Check	Yes
NFKD Quick Check	Yes
Numeric Type	None
Numeric Value	NaN
Line Break	Open Punctuation
East Asian Width	Wide
Script	Common
Script Extensions	Bopomofo Hangul Han Hiragana Katakana Yi
Indic Syllabic Category	Other
Pattern Syntax	Yes
Vertical Orientation	Transformed Rotated
Grapheme Base	Yes
Grapheme Cluster Break	Other
Word Break	Other
Sentence Break	Close