Use Hex Code to Mix Colors, help i dont know why my codes are not working

HTML-CSS
#1

Tell us what’s happening:

Your code so far


<style>
  .red-text {
    color: ff0000;
  }
  .green-text {
    color: 00ff00;
  }
  .dodger-blue-text {
    color: 1e90ff;
  }
  .orange-text {
    color: ffa500;
  }
</style>

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

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

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

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

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.77 Safari/537.36.

Link to the challenge:
https://learn.freecodecamp.org/responsive-web-design/basic-css/use-hex-code-to-mix-colors

#2

Hi,
you’ve just forget the # before the hex color, like #ff0000.

Kkaaro