#8B7E00

CSS

:root {
  --olive: #8b7e00;
  --olive-rgb: 139 126 0;
  --olive-oklch: oklch(0.587 0.123 102.2);
}

.element {
  color: var(--olive);
  background-color: hsl(54 100% 27%);
  border-color: oklch(0.587 0.123 102.2);
}

Tailwind CSS v4

@theme {
  --color-olive: #8b7e00;
  --color-olive-50: #faf8cf;
  --color-olive-100: #eeebbb;
  --color-olive-200: #dcd89a;
  --color-olive-300: #c1bb6f;
  --color-olive-400: #ada141;
  --color-olive-500: #978800;
  --color-olive-600: #7f7300;
  --color-olive-700: #665c00;
  --color-olive-800: #4c4300;
  --color-olive-900: #352e01;
  --color-olive-950: #201b00;
}

SCSS

$olive: #8b7e00;
$olive-rgb: 139, 126, 0;
$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);
}