<section class="color1">
  <h3 class="hex-val-1">#EAE4B2</h3>
  <h2>HELLO</h2>
  <h3>#00D544F</h3>
</section>
<section class="color2">
  <h3 class="hex-val-1">#0D544F</h3>
  <h2>WORLD</h2>
  <h3>#EAE4B2</h3>
</section>

body {
  width: 100vw;
  height: 100vh;
  margin: 0;
  display: flex;
}

.color1 {
  display: flex;
  width: 50%;
  height: 100%;
  background-color: #0d544f;
  color: #eae4b2;
}

.color2 {
  display: flex;
  width: 50%;
  height: 100%;
  background-color: #eae4b2;
  color: #0d544f;
}

h2 {
  margin: auto;
  font-family: Helvetica Neue;
  font-weight: 100;
  font-size: 3em;
  letter-spacing: 3px;
}

h3 {
  position: fixed;
  font-family: Helvetica Neue;
  bottom: 0;
  margin: 0 0 2vh 0;
  width: 50%;
  text-align: center;
  font-weight: 100;
}

.hex-val-1 {
  top: 0;
  margin: 2vh 0 0 0;
}