Basic CSS: Use Abbreviated Hex Code

<style>
  .red-text {
    color: #000000;
  }
  .fuchsia-text {
    color: #000000;
  }
  .cyan-text {
    color: #000000;
  }
  .green-text {
    color: #000000;
  }
</style>

<h1 class="red-text">I am red!</h1>

<h1 class="fuchsia-text">I am fuchsia!</h1>

<h1 class="cyan-text">I am cyan!</h1>

<h1 class="green-text">I am green!</h1>