#7E7B00

CSS

:root {
  --olive: #7e7b00;
  --olive-rgb: 126 123 0;
  --olive-oklch: oklch(0.567 0.122 108);
}

.element {
  color: var(--olive);
  background-color: hsl(59 100% 25%);
  border-color: oklch(0.567 0.122 108);
}

Tailwind CSS v4

@theme {
  --color-olive: #7e7b00;
  --color-olive-50: #f7f9d1;
  --color-olive-100: #eaecbd;
  --color-olive-200: #d7d99d;
  --color-olive-300: #bbbd72;
  --color-olive-400: #a5a446;
  --color-olive-500: #8f8b00;
  --color-olive-600: #797608;
  --color-olive-700: #605e09;
  --color-olive-800: #484403;
  --color-olive-900: #322f03;
  --color-olive-950: #1e1c00;
}

SCSS

$olive: #7e7b00;
$olive-rgb: 126, 123, 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);
}