#827810

CSS

:root {
  --olive: #827810;
  --olive-rgb: 130 120 16;
  --olive-oklch: oklch(0.564 0.114 103.4);
}

.element {
  color: var(--olive);
  background-color: hsl(55 78% 29%);
  border-color: oklch(0.564 0.114 103.4);
}

Tailwind CSS v4

@theme {
  --color-olive: #827810;
  --color-olive-50: #f9f8d2;
  --color-olive-100: #edebbf;
  --color-olive-200: #dbd89f;
  --color-olive-300: #bfbb75;
  --color-olive-400: #aaa14b;
  --color-olive-500: #948913;
  --color-olive-600: #7d7416;
  --color-olive-700: #645d12;
  --color-olive-800: #4b4309;
  --color-olive-900: #342e06;
  --color-olive-950: #1f1b00;
}

SCSS

$olive: #827810;
$olive-rgb: 130, 120, 16;
$olive-light: mix(#fff, $olive, 20%);
$olive-dark: mix(#000, $olive, 20%);

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