🟦 · Symbols › Shapes · Emoji 12.0 (2019)
🟦 is a plain blue square, added in 2019 with the other colored squares.
Emoji artists use it for water, sky and anything blue. In Wordle's high-contrast mode it replaces yellow as the 'right letter, wrong spot' color, and on its own it often marks team blue or an info status.
Paint with 🟦 in the emoji art editor, or turn any photo into emojis with the image to emoji converter.
U+1F7E6🟦\1F7E6\u{1F7E6}\U0001F7E6%F0%9F%9F%A6