Generated by SassMeister.com.

SassMeister-input-HTML.html

<ul class="colors">
  <li class="white">light</li>
  <li class="brand-light">brand-light</li>
  <li class="brand-color">brand-primary</li>
  <li class="brand-dark">brand-dark</li>
  <li class="dark">dark</li>
</ul>

SassMeister-input.scss

// ----
// Sass (v3.4.12)
// Compass (v1.0.3)
// ----

//step one
$white: #fff;
$brand-color: #88d9e6;
$dark: #374b4a;

$brand-light: mix($brand-color, $white, 50%);
$brand-dark: mix($brand-color, $dark, 80%);

.white {
  background-color: $white;
}

.dark {
  background-color: $dark;
}

.brand-color {
  background-color: $brand-color;
}

.brand-dark {
  background-color: $brand-dark;
}

.brand-light {
  background-color: $brand-light;
}

.colors li{
  display: block;
  height: 3em;
  width: 10%;
}

// add more mixes!
// $brand-secondary: #8b8Bae;

// $brand-secondary-blend: mix($brand-color, $brand-secondary, 40%);

// .brand-secondary {
//   background-color: $brand-secondary;
// }

// .brand-secondary-blend {
//   background-color: $brand-secondary-blend;
// }

SassMeister-output.css

.white {
  background-color: #fff;
}

.dark {
  background-color: #374b4a;
}

.brand-color {
  background-color: #88d9e6;
}

.brand-dark {
  background-color: #77bcc6;
}

.brand-light {
  background-color: #c3ecf2;
}

.colors li {
  display: block;
  height: 3em;
  width: 10%;
}

SassMeister-rendered.html

<ul class="colors">
  <li class="white">light</li>
  <li class="brand-light">brand-light</li>
  <li class="brand-color">brand-primary</li>
  <li class="brand-dark">brand-dark</li>
  <li class="dark">dark</li>
</ul>