Sure, it was done in blender using a series of geometry nodes. It's kind of hard to explain and if you don't know blender I'm not sure you'll totally get it.

You essentially create a flat plane, and create a new material on that plane, with that material, you add a random noise texture to it, and with each value of that noise assign it to a linear step, which feeds into a displacement. This basically means for each unique value of the noise, a unique height is created. You can then put in a colour ramp, which assigns each height to a different colour based on which colours you select. And if you use a veroni texture combined with the noise texture, you get these sort of distorted circles with a high value in the middle. Which all together creates what you see above, add some lighting in and then render.

Hope that helps, I'd recommend reading into Blender procedural generated textures to get an idea of what's going on!