#827511

CSS

:root {
  --olive: #827511;
  --olive-rgb: 130 117 17;
  --olive-oklch: oklch(0.558 0.111 101.2);
}

.element {
  color: var(--olive);
  background-color: hsl(53 77% 29%);
  border-color: oklch(0.558 0.111 101.2);
}

Tailwind CSS v4

@theme {
  --color-olive: #827511;
  --color-olive-50: #faf7d3;
  --color-olive-100: #eeeac0;
  --color-olive-200: #dcd7a0;
  --color-olive-300: #c1ba76;
  --color-olive-400: #aca04d;
  --color-olive-500: #968819;
  --color-olive-600: #7f7319;
  --color-olive-700: #665c14;
  --color-olive-800: #4c430b;
  --color-olive-900: #352e07;
  --color-olive-950: #201b00;
}

SCSS

$olive: #827511;
$olive-rgb: 130, 117, 17;
$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);
}