#956F4B

CSS

:root {
  --decreasing-brown: #956f4b;
  --decreasing-brown-rgb: 149 111 75;
  --decreasing-brown-oklch: oklch(0.571 0.07 64.1);
}

.element {
  color: var(--decreasing-brown);
  background-color: hsl(29 33% 44%);
  border-color: oklch(0.571 0.07 64.1);
}

Tailwind CSS v4

@theme {
  --color-decreasing-brown: #956f4b;
  --color-decreasing-brown-50: #fff2e1;
  --color-decreasing-brown-100: #f9e4d0;
  --color-decreasing-brown-200: #eacfb5;
  --color-decreasing-brown-300: #d1b192;
  --color-decreasing-brown-400: #bc9673;
  --color-decreasing-brown-500: #a77c54;
  --color-decreasing-brown-600: #8d6948;
  --color-decreasing-brown-700: #715439;
  --color-decreasing-brown-800: #543d29;
  --color-decreasing-brown-900: #3b2a1b;
  --color-decreasing-brown-950: #25170c;
}

SCSS

$decreasing-brown: #956f4b;
$decreasing-brown-rgb: 149, 111, 75;
$decreasing-brown-light: mix(#fff, $decreasing-brown, 20%);
$decreasing-brown-dark: mix(#000, $decreasing-brown, 20%);

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