#7E7900

CSS

:root {
  --olive: #7e7900;
  --olive-rgb: 126 121 0;
  --olive-oklch: oklch(0.562 0.12 106.8);
}

.element {
  color: var(--olive);
  background-color: hsl(58 100% 25%);
  border-color: oklch(0.562 0.12 106.8);
}

Tailwind CSS v4

@theme {
  --color-olive: #7e7900;
  --color-olive-50: #f7f9d1;
  --color-olive-100: #ebecbe;
  --color-olive-200: #d8d99d;
  --color-olive-300: #bcbd72;
  --color-olive-400: #a7a347;
  --color-olive-500: #908b01;
  --color-olive-600: #7a750b;
  --color-olive-700: #625e0b;
  --color-olive-800: #494404;
  --color-olive-900: #332f03;
  --color-olive-950: #1e1b00;
}

SCSS

$olive: #7e7900;
$olive-rgb: 126, 121, 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);
}