#9C6A64

CSS

:root {
  --rustling-leaves: #9c6a64;
  --rustling-leaves-rgb: 156 106 100;
  --rustling-leaves-oklch: oklch(0.575 0.065 26.9);
}

.element {
  color: var(--rustling-leaves);
  background-color: hsl(6 22% 50%);
  border-color: oklch(0.575 0.065 26.9);
}

Tailwind CSS v4

@theme {
  --color-rustling-leaves: #9c6a64;
  --color-rustling-leaves-50: #ffefeb;
  --color-rustling-leaves-100: #fde0dc;
  --color-rustling-leaves-200: #efcac4;
  --color-rustling-leaves-300: #d7aba4;
  --color-rustling-leaves-400: #c2908a;
  --color-rustling-leaves-500: #ad756f;
  --color-rustling-leaves-600: #93645e;
  --color-rustling-leaves-700: #76504b;
  --color-rustling-leaves-800: #573a37;
  --color-rustling-leaves-900: #3d2726;
  --color-rustling-leaves-950: #261514;
}

SCSS

$rustling-leaves: #9c6a64;
$rustling-leaves-rgb: 156, 106, 100;
$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);
}