#A48446

CSS

:root {
  --greek-olive: #a48446;
  --greek-olive-rgb: 164 132 70;
  --greek-olive-oklch: oklch(0.63 0.089 82.4);
}

.element {
  color: var(--greek-olive);
  background-color: hsl(40 40% 46%);
  border-color: oklch(0.63 0.089 82.4);
}

Tailwind CSS v4

@theme {
  --color-greek-olive: #a48446;
  --color-greek-olive-50: #fff4d9;
  --color-greek-olive-100: #f6e6c7;
  --color-greek-olive-200: #e6d2a9;
  --color-greek-olive-300: #cdb483;
  --color-greek-olive-400: #b99a5f;
  --color-greek-olive-500: #a3803a;
  --color-greek-olive-600: #8a6d32;
  --color-greek-olive-700: #6f5728;
  --color-greek-olive-800: #523f1b;
  --color-greek-olive-900: #392b12;
  --color-greek-olive-950: #241804;
}

SCSS

$greek-olive: #a48446;
$greek-olive-rgb: 164, 132, 70;
$greek-olive-light: mix(#fff, $greek-olive, 20%);
$greek-olive-dark: mix(#000, $greek-olive, 20%);

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