#A96249

CSS

:root {
  --red-cent: #a96249;
  --red-cent-rgb: 169 98 73;
  --red-cent-oklch: oklch(0.571 0.1 40);
}

.element {
  color: var(--red-cent);
  background-color: hsl(16 40% 47%);
  border-color: oklch(0.571 0.1 40);
}

Tailwind CSS v4

@theme {
  --color-red-cent: #a96249;
  --color-red-cent-50: #ffeddf;
  --color-red-cent-100: #ffdece;
  --color-red-cent-200: #fac7b3;
  --color-red-cent-300: #e4a78f;
  --color-red-cent-400: #d18a71;
  --color-red-cent-500: #be6e52;
  --color-red-cent-600: #a05d46;
  --color-red-cent-700: #814a37;
  --color-red-cent-800: #603528;
  --color-red-cent-900: #43241b;
  --color-red-cent-950: #2b130b;
}

SCSS

$red-cent: #a96249;
$red-cent-rgb: 169, 98, 73;
$red-cent-light: mix(#fff, $red-cent, 20%);
$red-cent-dark: mix(#000, $red-cent, 20%);

.element {
  color: $red-cent;
  box-shadow: 0 0 0 2px rgba($red-cent, 0.35);
}