What ⭗ means
They mark different civic services.
The 2009 proposal groups ⭖ for a prefectural office, ⭗ for a municipal office, ⭘ for a town or village office, and ⭙ for a police station. A prefecture is a large administrative region in Japan.
Don't confuse it with
1Questions people ask
1Why 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.
How to type ⭗
Windows (Word)
Alt+XType 2B57, then Alt+X 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 “heavy circle with circle inside”.
Linux
Ctrl+Shift+UType 2b57, then Enter or Space.
HTML
⭗CSS
\2B57Codes and encoding1 code points
HTML decimal
⭗
HTML hex
⭗
CSS content
content: "\2B57";
Each escape is closed by the next backslash; a trailing space is needed before a literal hex digit.
URL encoded
%E2%AD%97
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.