#A36665

CSS

:root {
  --rustling-leaves: #a36665;
  --rustling-leaves-rgb: 163 102 101;
  --rustling-leaves-oklch: oklch(0.576 0.079 20.8);
}

.element {
  color: var(--rustling-leaves);
  background-color: hsl(1 25% 52%);
  border-color: oklch(0.576 0.079 20.8);
}

Tailwind CSS v4

@theme {
  --color-rustling-leaves: #a36665;
  --color-rustling-leaves-50: #ffedeb;
  --color-rustling-leaves-100: #ffdedc;
  --color-rustling-leaves-200: #f5c8c5;
  --color-rustling-leaves-300: #dda8a5;
  --color-rustling-leaves-400: #c98c8a;
  --color-rustling-leaves-500: #b5716f;
  --color-rustling-leaves-600: #99605f;
  --color-rustling-leaves-700: #7b4c4b;
  --color-rustling-leaves-800: #5b3738;
  --color-rustling-leaves-900: #402626;
  --color-rustling-leaves-950: #281414;
}

SCSS

$rustling-leaves: #a36665;
$rustling-leaves-rgb: 163, 102, 101;
$rustling-leaves-light: mix(#fff, $rustling-leaves, 20%);
$rustling-leaves-dark: mix(#000, $rustling-leaves, 20%);

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