#777B00

CSS

:root {
  --olive: #777b00;
  --olive-rgb: 119 123 0;
  --olive-oklch: oklch(0.561 0.124 112);
}

.element {
  color: var(--olive);
  background-color: hsl(62 100% 24%);
  border-color: oklch(0.561 0.124 112);
}

Tailwind CSS v4

@theme {
  --color-olive: #777b00;
  --color-olive-50: #f4fad2;
  --color-olive-100: #e7edbe;
  --color-olive-200: #d3db9d;
  --color-olive-300: #b6bf73;
  --color-olive-400: #a0a648;
  --color-olive-500: #898d03;
  --color-olive-600: #74780c;
  --color-olive-700: #5d600b;
  --color-olive-800: #454604;
  --color-olive-900: #303003;
  --color-olive-950: #1c1c00;
}

SCSS

$olive: #777b00;
$olive-rgb: 119, 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);
}