<div class="grid">
  <div class="grid-item blue0">
    <p>
    <h3>Lightness - 0%</h3>
    <p>hsl(217, 89%, 0%)</p>
    </p>
  </div>
  <div class="grid-item blue20">
    <p>
    <h3>Lightness - 20%</h3>
    <p>hsl(217, 89%, 20%)</p>
    </p>
  </div>
  <div class="grid-item blue40">
    <p>
    <h3>Lightness - 40%</h3>
    <p>hsl(217, 89%, 40%)</p>
    </p>
  </div>
  <div class="grid-item blue60">
    <p>
    <h3>Lightness - 60%</h3>
    <p>hsl(217, 89%, 60%)</p>
    </p>
  </div>
  <div class="grid-item blue80">
    <p>
    <h3>Lightness - 80%</h3>
    <p>hsl(217, 89%, 80%)</p>
    </p>
  </div>
  <div class="grid-item blue100">
    <p>
    <h3>Lightness - 100%</h3>
    <p>hsl(217, 89%, 100%)</p>
    </p>
  </div>
</div>

@import url(https://fonts.googleapis.com/css?family=Open+Sans);

body {
  font-family: "Open Sans", sans-serif;
  margin: 2rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(400px, 1fr));
  margin: 0 auto;
}

.grid-item {
  padding: 0 1.25rem 1rem;
  margin: 1rem;
  text-align: left;
  overflow: hidden;
}

h3 {
  margin-bottom: 0;
  font-size: 2rem;
  text-align: center;
}

p {
  font-size: 1.5rem;
  text-align: center;
}

.blue0 {
  background: hsl(217, 89%, 0%);
  color: #ffffff;
}

.blue20 {
  background: hsl(217, 89%, 20%);
  color: #ffffff;
}

.blue40 {
  background: hsl(217, 89%, 40%);
  color: #ffffff;
}

.blue60 {
  background: hsl(217, 89%, 60%);
}

.blue80 {
  background: hsl(217, 89%, 80%);
}

.blue100 {
  background: hsl(217, 89%, 100%);
}