RGB CYMK

function setup() {

  createCanvas(800, 800);

  background(255);

}

​

function draw() {

  rectMode(CENTER);

  noStroke();

  fill('red');

  rect(width*0.2,height*0.3,100,100);

  fill('green');

  rect(width*0.5,height*0.3,100,100);

  fill('blue');

  rect(width*0.8,height*0.3,100,100);

  fill('cyan');

  rect(width*0.2,height*0.7,100,100);

  fill('magenta');

  rect(width*0.4,height*0.7,100,100);

  fill('yellow');

  rect(width*0.6,height*0.7,100,100);

  fill('black');

  rect(width*0.8,height*0.7,100,100);

}