#985734

CSS

:root {
  --hello-fall: #985734;
  --hello-fall-rgb: 152 87 52;
  --hello-fall-oklch: oklch(0.525 0.099 47.9);
}

.element {
  color: var(--hello-fall);
  background-color: hsl(21 49% 40%);
  border-color: oklch(0.525 0.099 47.9);
}

Tailwind CSS v4

@theme {
  --color-hello-fall: #985734;
  --color-hello-fall-50: #ffeedd;
  --color-hello-fall-100: #ffdfcb;
  --color-hello-fall-200: #f8c9af;
  --color-hello-fall-300: #e2a98a;
  --color-hello-fall-400: #cf8c6a;
  --color-hello-fall-500: #bb7049;
  --color-hello-fall-600: #9e603f;
  --color-hello-fall-700: #7f4c32;
  --color-hello-fall-800: #5e3724;
  --color-hello-fall-900: #422518;
  --color-hello-fall-950: #2a1409;
}

SCSS

$hello-fall: #985734;
$hello-fall-rgb: 152, 87, 52;
$hello-fall-light: mix(#fff, $hello-fall, 20%);
$hello-fall-dark: mix(#000, $hello-fall, 20%);

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