let angle = 0.02;
let r = 200;
function setup(){
createCanvas(400, 333);
background(266);
}
function draw(){
stroke(100-angle);
stroke(random(125),125,133)
let x = width/2+ cos(angle) * (r-angle);
let y = height/2 + sin(angle) * (r-angle);
line(width/2, height/2, x, y);
angle += 0.9;
}
<script src='https://cdn.jsdelivr.net/npm/p5@1.1.9/lib/p5.min.js'></script>