#A46663

CSS

:root {
  --rustling-leaves: #a46663;
  --rustling-leaves-rgb: 164 102 99;
  --rustling-leaves-oklch: oklch(0.577 0.081 22.9);
}

.element {
  color: var(--rustling-leaves);
  background-color: hsl(3 26% 52%);
  border-color: oklch(0.577 0.081 22.9);
}

Tailwind CSS v4

@theme {
  --color-rustling-leaves: #a46663;
  --color-rustling-leaves-50: #ffedea;
  --color-rustling-leaves-100: #ffdeda;
  --color-rustling-leaves-200: #f5c8c3;
  --color-rustling-leaves-300: #dea8a3;
  --color-rustling-leaves-400: #ca8c88;
  --color-rustling-leaves-500: #b6706d;
  --color-rustling-leaves-600: #9a5f5c;
  --color-rustling-leaves-700: #7b4c4a;
  --color-rustling-leaves-800: #5b3736;
  --color-rustling-leaves-900: #402525;
  --color-rustling-leaves-950: #291414;
}

SCSS

$rustling-leaves: #a46663;
$rustling-leaves-rgb: 164, 102, 99;
$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);
}