#A15A15

CSS

:root {
  --chilli-con-carne: #a15a15;
  --chilli-con-carne-rgb: 161 90 21;
  --chilli-con-carne-oklch: oklch(0.54 0.12 58.2);
}

.element {
  color: var(--chilli-con-carne);
  background-color: hsl(30 77% 36%);
  border-color: oklch(0.54 0.12 58.2);
}

Tailwind CSS v4

@theme {
  --color-chilli-con-carne: #a15a15;
  --color-chilli-con-carne-50: #ffeed3;
  --color-chilli-con-carne-100: #ffdfc0;
  --color-chilli-con-carne-200: #fbc9a1;
  --color-chilli-con-carne-300: #e5a977;
  --color-chilli-con-carne-400: #d38c52;
  --color-chilli-con-carne-500: #c06f25;
  --color-chilli-con-carne-600: #a25e22;
  --color-chilli-con-carne-700: #824b1b;
  --color-chilli-con-carne-800: #613613;
  --color-chilli-con-carne-900: #44250c;
  --color-chilli-con-carne-950: #2c1301;
}

SCSS

$chilli-con-carne: #a15a15;
$chilli-con-carne-rgb: 161, 90, 21;
$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);
}