#AE6028

CSS

:root {
  --polished-copper: #ae6028;
  --polished-copper-rgb: 174 96 40;
  --polished-copper-oklch: oklch(0.57 0.122 52.8);
}

.element {
  color: var(--polished-copper);
  background-color: hsl(25 63% 42%);
  border-color: oklch(0.57 0.122 52.8);
}

Tailwind CSS v4

@theme {
  --color-polished-copper: #ae6028;
  --color-polished-copper-50: #ffedd5;
  --color-polished-copper-100: #ffdec2;
  --color-polished-copper-200: #fec7a3;
  --color-polished-copper-300: #e8a77a;
  --color-polished-copper-400: #d78956;
  --color-polished-copper-500: #c46c2c;
  --color-polished-copper-600: #a55c28;
  --color-polished-copper-700: #85491f;
  --color-polished-copper-800: #633416;
  --color-polished-copper-900: #46240e;
  --color-polished-copper-950: #2d1202;
}

SCSS

$polished-copper: #ae6028;
$polished-copper-rgb: 174, 96, 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);
}