#A1685D

CSS

:root {
  --rustling-leaves: #a1685d;
  --rustling-leaves-rgb: 161 104 93;
  --rustling-leaves-oklch: oklch(0.576 0.076 31.5);
}

.element {
  color: var(--rustling-leaves);
  background-color: hsl(10 27% 50%);
  border-color: oklch(0.576 0.076 31.5);
}

Tailwind CSS v4

@theme {
  --color-rustling-leaves: #a1685d;
  --color-rustling-leaves-50: #ffeee7;
  --color-rustling-leaves-100: #ffdfd8;
  --color-rustling-leaves-200: #f3c9bf;
  --color-rustling-leaves-300: #dbaa9e;
  --color-rustling-leaves-400: #c78e83;
  --color-rustling-leaves-500: #b37367;
  --color-rustling-leaves-600: #976257;
  --color-rustling-leaves-700: #794e46;
  --color-rustling-leaves-800: #5a3833;
  --color-rustling-leaves-900: #3f2623;
  --color-rustling-leaves-950: #281512;
}

SCSS

$rustling-leaves: #a1685d;
$rustling-leaves-rgb: 161, 104, 93;
$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);
}