Fluid font size based on frame width?

I am using the Utopia plugin to generate steps and spacing for a design. What I’m now looking for is starting small and using a variable or token for say, an h1, but I would like that h1 to be reflective of the clamp font size relative to the frame width. So for a mobile design the font size should be closer to the minimum font size, while a desktop design would be closer to the max, or all the way. Hope that makes sense! Thanks.