float radius, slices, slice;
float x, y;
float circles;

color[] cols = {#E4D9FF, #E2D6FF, #C6ADFF, #B899FF, #A985FF, #9B70FF, #8D5CFF, #7E47FF, #7033FF, #621FFF};

void setup() {
  size(500, 500);
  background(18, 0, 61);
  slices = 6;
  radius = 10;
  circles = 20;
  stroke(#ffffff);
  noLoop();
}

void draw() {
  for(float j = 0; j < circles; j++){
    for (float i = 0; i < slices; i++){
      slice = TWO_PI/slices;
      float angle = i * slice;
      x = width/2 + cos(angle) * radius * (j + 1);
      y = height/2 + sin(angle) * radius * (j + 1);
      
      int c = (int) map(x, 0, TWO_PI, 0, 4) % cols.length;
      fill(cols[c]);
      ellipse(x, y, 2*(j+1), 2*(j+1));

    }
    slices+= 4;
  }
}