Generated by SassMeister.com.

input.scss

@use "sass:color";

.foo {
  color: color.complement(turquoise);
}

output.css

.foo {
  color: #e04050;
}

settings.json

{
  "sass": {
    "compiler": "dart-sass/1.32.12",
    "extensions": {},
    "syntax": "SCSS",
    "outputStyle": "expanded"
  },
  "autoprefixer": false
}