#AF6331

CSS

:root {
  --polished-copper: #af6331;
  --polished-copper-rgb: 175 99 49;
  --polished-copper-oklch: oklch(0.577 0.117 51.6);
}

.element {
  color: var(--polished-copper);
  background-color: hsl(24 56% 44%);
  border-color: oklch(0.577 0.117 51.6);
}

Tailwind CSS v4

@theme {
  --color-polished-copper: #af6331;
  --color-polished-copper-50: #ffedd6;
  --color-polished-copper-100: #ffdec4;
  --color-polished-copper-200: #fdc7a6;
  --color-polished-copper-300: #e7a77e;
  --color-polished-copper-400: #d58a5b;
  --color-polished-copper-500: #c26d34;
  --color-polished-copper-600: #a45c2e;
  --color-polished-copper-700: #844a24;
  --color-polished-copper-800: #62351a;
  --color-polished-copper-900: #452411;
  --color-polished-copper-950: #2c1204;
}

SCSS

$polished-copper: #af6331;
$polished-copper-rgb: 175, 99, 49;
$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);
}