#995F1F

CSS

:root {
  --chilli-con-carne: #995f1f;
  --chilli-con-carne-rgb: 153 95 31;
  --chilli-con-carne-oklch: oklch(0.539 0.107 63.8);
}

.element {
  color: var(--chilli-con-carne);
  background-color: hsl(31 66% 36%);
  border-color: oklch(0.539 0.107 63.8);
}

Tailwind CSS v4

@theme {
  --color-chilli-con-carne: #995f1f;
  --color-chilli-con-carne-50: #fff0d6;
  --color-chilli-con-carne-100: #ffe2c3;
  --color-chilli-con-carne-200: #f5cca4;
  --color-chilli-con-carne-300: #dead7c;
  --color-chilli-con-carne-400: #cb9058;
  --color-chilli-con-carne-500: #b7752f;
  --color-chilli-con-carne-600: #9b6329;
  --color-chilli-con-carne-700: #7c4f21;
  --color-chilli-con-carne-800: #5d3917;
  --color-chilli-con-carne-900: #41270e;
  --color-chilli-con-carne-950: #291503;
}

SCSS

$chilli-con-carne: #995f1f;
$chilli-con-carne-rgb: 153, 95, 31;
$chilli-con-carne-light: mix(#fff, $chilli-con-carne, 20%);
$chilli-con-carne-dark: mix(#000, $chilli-con-carne, 20%);

.element {
  color: $chilli-con-carne;
  box-shadow: 0 0 0 2px rgba($chilli-con-carne, 0.35);
}