If you’re already using CSS locks, modular scales, and custom properties, Utopia is almost certainly going to be a good fit for you.
If you’re not yet using those techniques, but you’d like to, I highly recommend using Utopia on your next project.
An intriguing new project from some of the brains at ClearLeft for "elegantly scaling type" on the web. Personally, I'm all for anything that reduces or removes the need for breakpoints in my CSS!