#907052

CSS

:root {
  --decreasing-brown: #907052;
  --decreasing-brown-rgb: 144 112 82;
  --decreasing-brown-oklch: oklch(0.569 0.059 64.3);
}

.element {
  color: var(--decreasing-brown);
  background-color: hsl(29 27% 44%);
  border-color: oklch(0.569 0.059 64.3);
}

Tailwind CSS v4

@theme {
  --color-decreasing-brown: #907052;
  --color-decreasing-brown-50: #fff2e4;
  --color-decreasing-brown-100: #f6e5d4;
  --color-decreasing-brown-200: #e6d0ba;
  --color-decreasing-brown-300: #cdb298;
  --color-decreasing-brown-400: #b8987a;
  --color-decreasing-brown-500: #a27e5c;
  --color-decreasing-brown-600: #896b4f;
  --color-decreasing-brown-700: #6e553f;
  --color-decreasing-brown-800: #513e2d;
  --color-decreasing-brown-900: #392b1e;
  --color-decreasing-brown-950: #23180e;
}

SCSS

$decreasing-brown: #907052;
$decreasing-brown-rgb: 144, 112, 82;
$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);
}