Generated by SassMeister.com.

SassMeister-input.scss

$cool: blue;
$mad: red;

$colors: (
  cool: $cool,
  mad: $mad
);

.prfx-color {
  @each $color in map-keys($colors) {
    &--#{$color} {
      background-color: map-get($colors, $color);
    
      &::after { content: "$#{$color}"; }
    }
  }
}

SassMeister-output.css

.prfx-color--cool {
  background-color: blue;
}
.prfx-color--cool::after {
  content: "$cool";
}
.prfx-color--mad {
  background-color: red;
}
.prfx-color--mad::after {
  content: "$mad";
}