#867715

CSS

:root {
  --olive: #867715;
  --olive-rgb: 134 119 21;
  --olive-oklch: oklch(0.566 0.111 99.8);
}

.element {
  color: var(--olive);
  background-color: hsl(52 73% 30%);
  border-color: oklch(0.566 0.111 99.8);
}

Tailwind CSS v4

@theme {
  --color-olive: #867715;
  --color-olive-50: #fbf7d3;
  --color-olive-100: #efeac0;
  --color-olive-200: #ddd7a0;
  --color-olive-300: #c3ba76;
  --color-olive-400: #aea04d;
  --color-olive-500: #988718;
  --color-olive-600: #807218;
  --color-olive-700: #675b14;
  --color-olive-800: #4d420b;
  --color-olive-900: #352e07;
  --color-olive-950: #211a00;
}

SCSS

$olive: #867715;
$olive-rgb: 134, 119, 21;
$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);
}