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【

left black lenticular bracket

Left black lenticular bracket

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【 opens 【】, the Japanese sumitsuki kakko (隅付き括弧), a pair of bold brackets that turns a word into an eye-catching tag. You meet it at the front of Japanese headings and email subjects, flagging a deadline, a category or a notice. The words inside carry the message; the brackets are the highlighter.

Text symbol

What 【 means

It opens a highlighted label, closed by 】. Don't translate the brackets; translate what they hold. In 【期限あり】 the tag is 期限あり, "deadline applies," and the brackets simply make it jump out before the rest of the heading.

Japanese style guidance shows the pair tagging items and important points in headings, notices and email subject lines, where a reader scans labels before reading the body.

In Japanese work headings and email subjects, 【】 makes a label conspicuous and slightly urgent.

Bracket every item and routine mail starts shouting.

Don't confuse it with

1

〖〗 Hollow (white) lenticular brackets are separate characters, not a font style of the solid 【】.

Combination ideas

4
Japanese "breaking news" tag at the start of a headline.
"Official" tag on Japanese account names.
Japanese video tag: "I tried singing it" cover.
Japanese label: "deadline applies."

Questions people ask

1

Why does 【 show as a box on some devices?

Because that device's fonts have no glyph for it. The character is still correct and still copies correctly — the box is a missing glyph, not a broken character.

Collections with 【

25
【Bracket Symbols159 symbols〒Japanese Text Symbols255 symbols╭Border & Frame Symbols194 symbols❦Fancy Symbols169 symbols꧁Nickname Symbols140 symbols📌Discord Symbols237 symbolsＡFullwidth Text (Vaporwave Letters)112 symbols📸Instagram Symbols267 symbols👍Facebook Symbols & Emoji245 symbols🎵TikTok Symbols & Emoji270 symbols👻Snapchat Emoji Meanings231 symbols𝕏X (Twitter) Symbols247 symbols💬WhatsApp Symbols & Emoji Meanings265 symbols▶️YouTube Symbols249 symbols✈️Telegram Symbols & Emoji233 symbols🎧Spotify Symbols250 symbols🧱Roblox Symbols248 symbolsツFortnite Symbols321 symbols🕹️Steam Symbols294 symbols🎮Xbox Gamertag Symbols267 symbols中Chinese Characters257 symbolsあJapanese Characters273 symbols繁Traditional Chinese Characters218 symbols🇨🇳China Emoji & Symbols131 symbols🇯🇵Japan Emoji & Symbols153 symbols

How to type or find 【

Search it as
Japanese brackets · sumitsuki kakko · 隅付き括弧 · lenticular bracket
Shows up in
Anything that takes text · its shape is whatever your font draws
Windows (Word)
⎇Alt+XType 3010, then AltX to get 【.
Windows
⊞Win+Rrun charmap for the full table, or use the emoji picker's Ω symbols tab (Win .).
macOS
⌃Control+⌘Command+␣SpaceOpen the character viewer and search “left black lenticular bracket”.
Linux
⎈Ctrl+⇧Shift+UType 3010, then Enter or Space.
HTML
【
CSS
\3010
Japanese IME: how to type 【
With a Japanese input method on, type かっこ (kakko, "brackets"), press convert, and pick 【】 from the candidates.
Codes and encoding1 code points
HTML decimal
【
HTML hex
【
CSS content
content: "\3010";
Each escape is closed by the next backslash; a trailing space is needed before a literal hex digit.
URL encoded
%E3%80%90
1
On screen
1
Code points
1
JS .length
3
UTF-8 bytes

A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.

Families this belongs to

1

Chinese, Japanese & Korean121,370 symbols

ᄀᄁᄂᄃᄄᄅᄆᄇᄈᄉᄊᄋ