#888A00

CSS

:root {
  --olive: #888a00;
  --olive-rgb: 136 138 0;
  --olive-oklch: oklch(0.611 0.134 110.8);
}

.element {
  color: var(--olive);
  background-color: hsl(61 100% 27%);
  border-color: oklch(0.611 0.134 110.8);
}

Tailwind CSS v4

@theme {
  --color-olive: #888a00;
  --color-olive-50: #f5face;
  --color-olive-100: #e8edba;
  --color-olive-200: #d4db98;
  --color-olive-300: #b8bf6c;
  --color-olive-400: #a2a53c;
  --color-olive-500: #8b8d00;
  --color-olive-600: #767700;
  --color-olive-700: #5e6000;
  --color-olive-800: #474500;
  --color-olive-900: #313000;
  --color-olive-950: #1d1c00;
}

SCSS

$olive: #888a00;
$olive-rgb: 136, 138, 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);
}