Explain Tertiary Colors

Tell us what’s happening:
This particular item needs a much better explanation. Makes no sense as it is.

Your code so far

  body {
    background-color: #FFFFFF;
  .orange {
    background-color: #000000;
  .cyan {
    background-color: #000000;
  .raspberry {
    background-color: #000000;
  div {
    height: 100px;
    width: 100px;
    margin-bottom: 5px;
<div class="orange"></div>
<div class="cyan"></div>
<div class="raspberry"></div>

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/77.0.3865.90 Safari/537.36.

Link to the challenge:

Thing is you actually need to change the numbers for each color so the colors show up. Right now, it seems all numbers are set to 0. Change those values for the ones corresponding to each color, as detailed in the challenge explanation. It should work.

Thank you for your response.
I’m sorry, I wasn’t at all clear with my question. I meant that the whole subject of secondary colors, tertiary colors and split-complementary color scheme needs much better coverage. But I can find that on the WEB.