JSFiddle - React, Tailwind, and code Playground

HTML

<input type="radio" class='radio' name='radio1' id="a1"><label for="a1">Выбор 1</label>
<input type="radio" class='radio' name='radio1' id="a2"><label for="a2">Выбор 2</label>
<input type="radio" class='radio' name='radio1' id="a3"><label for="a3">Выбор 3</label>

CSS

.radio:checked + label{
  color: green;
}