#A86349

CSS

:root {
  --red-cent: #a86349;
  --red-cent-rgb: 168 99 73;
  --red-cent-oklch: oklch(0.571 0.098 41.2);
}

.element {
  color: var(--red-cent);
  background-color: hsl(16 39% 47%);
  border-color: oklch(0.571 0.098 41.2);
}

Tailwind CSS v4

@theme {
  --color-red-cent: #a86349;
  --color-red-cent-50: #ffeddf;
  --color-red-cent-100: #ffdece;
  --color-red-cent-200: #f9c8b3;
  --color-red-cent-300: #e3a88f;
  --color-red-cent-400: #d08b71;
  --color-red-cent-500: #bc6f52;
  --color-red-cent-600: #9f5e46;
  --color-red-cent-700: #804b37;
  --color-red-cent-800: #5f3628;
  --color-red-cent-900: #43251b;
  --color-red-cent-950: #2b130b;
}

SCSS

$red-cent: #a86349;
$red-cent-rgb: 168, 99, 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);
}