#AF6328

CSS

:root {
  --polished-copper: #af6328;
  --polished-copper-rgb: 175 99 40;
  --polished-copper-oklch: oklch(0.576 0.121 54.7);
}

.element {
  color: var(--polished-copper);
  background-color: hsl(26 63% 42%);
  border-color: oklch(0.576 0.121 54.7);
}

Tailwind CSS v4

@theme {
  --color-polished-copper: #af6328;
  --color-polished-copper-50: #ffedd4;
  --color-polished-copper-100: #ffdec1;
  --color-polished-copper-200: #fdc8a2;
  --color-polished-copper-300: #e7a779;
  --color-polished-copper-400: #d58a55;
  --color-polished-copper-500: #c26d2a;
  --color-polished-copper-600: #a45d26;
  --color-polished-copper-700: #844a1e;
  --color-polished-copper-800: #623515;
  --color-polished-copper-900: #45240d;
  --color-polished-copper-950: #2d1302;
}

SCSS

$polished-copper: #af6328;
$polished-copper-rgb: 175, 99, 40;
$polished-copper-light: mix(#fff, $polished-copper, 20%);
$polished-copper-dark: mix(#000, $polished-copper, 20%);

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