createCanvas(400, 400);

  rectMode(CENTER)

​

}

​

function draw() {

  background(100); //0 to 255 red, green, blue, you can do name of color and hex color picker from google

  let size= 400; 

  let cx= width/2

  let cy=height/2

​

  fill(255);

  strokeWeight(20);

  stroke(30, 46, 200);

  ellipse(200, 200, size, size); //x,y,width,height 

​

  strokeWeight(2);

  rect(200, 200, size/2, size/2); //x, y, w, h

​

stroke(0);

line(mouseX, mouseY, cx, cy);

print(mouseX, mouseY); 

}

​

​