#807902

CSS

:root {
  --olive: #807902;
  --olive-rgb: 128 121 2;
  --olive-oklch: oklch(0.564 0.12 105.6);
}

.element {
  color: var(--olive);
  background-color: hsl(57 97% 25%);
  border-color: oklch(0.564 0.12 105.6);
}

Tailwind CSS v4

@theme {
  --color-olive: #807902;
  --color-olive-50: #f8f8d1;
  --color-olive-100: #ebebbe;
  --color-olive-200: #d9d99d;
  --color-olive-300: #bdbc72;
  --color-olive-400: #a8a247;
  --color-olive-500: #928a02;
  --color-olive-600: #7b750c;
  --color-olive-700: #635d0b;
  --color-olive-800: #4a4404;
  --color-olive-900: #332f04;
  --color-olive-950: #1f1b00;
}

SCSS

$olive: #807902;
$olive-rgb: 128, 121, 2;
$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);
}