#A86553

CSS

:root {
  --red-cent: #a86553;
  --red-cent-rgb: 168 101 83;
  --red-cent-oklch: oklch(0.577 0.091 35.8);
}

.element {
  color: var(--red-cent);
  background-color: hsl(13 34% 49%);
  border-color: oklch(0.577 0.091 35.8);
}

Tailwind CSS v4

@theme {
  --color-red-cent: #a86553;
  --color-red-cent-50: #ffede3;
  --color-red-cent-100: #ffded2;
  --color-red-cent-200: #f8c8b9;
  --color-red-cent-300: #e1a896;
  --color-red-cent-400: #ce8b79;
  --color-red-cent-500: #ba6f5b;
  --color-red-cent-600: #9d5e4e;
  --color-red-cent-700: #7e4b3e;
  --color-red-cent-800: #5e362d;
  --color-red-cent-900: #42251e;
  --color-red-cent-950: #2a130e;
}

SCSS

$red-cent: #a86553;
$red-cent-rgb: 168, 101, 83;
$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);
}