oliverbooth.dev/src/scss/prism.vs.scss

$background: #1E1E1E;
$foreground: #DCDCDA;

// C#
$comment: #23A658;
$string: #EA9D78;
$function: #A0D7A7;
$class-name: #13C9C6;
$keyword: #439CE2;
$preprocessor-property: #9B9B99;

// Css
$atrule: $keyword;
$css-foreground: #C8C8C6;
$css-selector: #D8BA76;
$css-property: #67DCFF;

// Markup (HTML, XML)
$doctype: $class-name;
$markup-tag: $keyword;
$attr-name: #87DCFF;
$markup-punctuation: #80807F;
$markup-attr-value: $css-foreground;

code[class*="language-"] {
  font-family: SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace;
  background: $background;
  color: $foreground;
}

.token {
  &.punctuation {
    color: $foreground;
  }

  &.comment {
    color: $comment;
  }

  &.string {
    color: $string;
  }

  &.function {
    color: $function;
  }

  &.class-name {
    color: $class-name;
  }

  &.doctype, &.prolog {
    color: $doctype;
  }

  &.keyword {
    color: $keyword;
  }

  &.preprocessor.property {
    color: $preprocessor-property;

    .keyword {
      color: $preprocessor-property;
    }
  }

  &.selector {
    color: $css-selector;
  }

  &.atrule {
    color: $atrule;
  }

  &.tag {
    color: $markup-tag;
  }

  &.attr-name {
    color: $attr-name;
  }

  &.attr-value {
    color: $markup-attr-value;
  }
}

// CSS
code[class*="language-css"] {
  color: $css-foreground;

  .token {

    &.property {
      color: $css-property;
    }

    &.string {
      color: $css-foreground;
    }
  }
}

// Markup
code[class*="language-markup"] {
  .token {
    &.punctuation {
      color: $markup-punctuation;
    }
  }
}