@JordiGH only 18 lines of actual function!

```typst
#set page(margin: 3%, height: 595.28pt)

#let rainbow-circle = (iterations, spirals) => {
place(center + horizon)[
#layout(size => {
for i in range(iterations) {
let textAngle = spirals * i * 360deg / iterations
let textRadius = 50% * size.width * (i / iterations)
place(
dx: textRadius * calc.cos(textAngle),
dy: textRadius * calc.sin(textAngle),
rotate(textAngle, text(fill: color.map.rainbow.at(calc.rem(i, 256)))[#i]),
)
}
})
]
}

#rainbow-circle(500, 11)
```