A community vote in the CSS-Next repository on GitHub decided on a new official logo for CSS. The design follows the design language of the logos of other web technologies like JavaScript, TypeScript, and WebAssembly.

But perhaps more importantly, the logo uses the color rebeccapurple (#663399), a color that was added to the CSS specification in 2014 in honor of Eric Meyer's daughter, Rebecca, who passed away at the age of six on her birthday from brain cancer.

Eric Meyer, author of several books on CSS, has been an important figure in the CSS community since the late 1990s.

The color was originally going to be called beccapurple, but Meyer asked that it instead be named rebeccapurple, as his daughter had wanted to be called Rebecca once she had turned six. She had said that Becca was a "baby name," and that once she had turned six, she wanted to be called Rebecca. As Eric Meyer put it, "She made it to six. For almost twelve hours, she was six. So Rebecca it is and must be."