#A86247

CSS

:root {
  --red-cent: #a86247;
  --red-cent-rgb: 168 98 71;
  --red-cent-oklch: oklch(0.569 0.099 41.6);
}

.element {
  color: var(--red-cent);
  background-color: hsl(17 41% 47%);
  border-color: oklch(0.569 0.099 41.6);
}

Tailwind CSS v4

@theme {
  --color-red-cent: #a86247;
  --color-red-cent-50: #ffeddf;
  --color-red-cent-100: #ffdece;
  --color-red-cent-200: #fac7b2;
  --color-red-cent-300: #e4a78e;
  --color-red-cent-400: #d18b70;
  --color-red-cent-500: #bd6e50;
  --color-red-cent-600: #a05e44;
  --color-red-cent-700: #804b36;
  --color-red-cent-800: #5f3627;
  --color-red-cent-900: #43251a;
  --color-red-cent-950: #2b130b;
}

SCSS

$red-cent: #a86247;
$red-cent-rgb: 168, 98, 71;
$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);
}