#693E00

CSS

:root {
  --brown: #693e00;
  --brown-rgb: 105 62 0;
  --brown-oklch: oklch(0.406 0.09 67);
}

.element {
  color: var(--brown);
  background-color: hsl(35 100% 21%);
  border-color: oklch(0.406 0.09 67);
}

Tailwind CSS v4

@theme {
  --color-brown: #693e00;
  --color-brown-50: #fff1da;
  --color-brown-100: #fce3c8;
  --color-brown-200: #eeceab;
  --color-brown-300: #d6b086;
  --color-brown-400: #c29464;
  --color-brown-500: #ae7a40;
  --color-brown-600: #936737;
  --color-brown-700: #76532c;
  --color-brown-800: #583c1f;
  --color-brown-900: #3d2914;
  --color-brown-950: #271706;
}

SCSS

$brown: #693e00;
$brown-rgb: 105, 62, 0;
$brown-light: mix(#fff, $brown, 20%);
$brown-dark: mix(#000, $brown, 20%);

.element {
  color: $brown;
  box-shadow: 0 0 0 2px rgba($brown, 0.35);
}