#9D5C24

CSS

:root {
  --chilli-con-carne: #9d5c24;
  --chilli-con-carne-rgb: 157 92 36;
  --chilli-con-carne-oklch: oklch(0.539 0.11 57.6);
}

.element {
  color: var(--chilli-con-carne);
  background-color: hsl(28 63% 38%);
  border-color: oklch(0.539 0.11 57.6);
}

Tailwind CSS v4

@theme {
  --color-chilli-con-carne: #9d5c24;
  --color-chilli-con-carne-50: #ffefd7;
  --color-chilli-con-carne-100: #ffe0c4;
  --color-chilli-con-carne-200: #f8caa6;
  --color-chilli-con-carne-300: #e2aa7e;
  --color-chilli-con-carne-400: #cf8d5b;
  --color-chilli-con-carne-500: #bc7234;
  --color-chilli-con-carne-600: #9e602d;
  --color-chilli-con-carne-700: #7f4d24;
  --color-chilli-con-carne-800: #5f3719;
  --color-chilli-con-carne-900: #432610;
  --color-chilli-con-carne-950: #2b1404;
}

SCSS

$chilli-con-carne: #9d5c24;
$chilli-con-carne-rgb: 157, 92, 36;
$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);
}