#82674B

CSS

:root {
  --pastel-brown: #82674b;
  --pastel-brown-rgb: 130 103 75;
  --pastel-brown-oklch: oklch(0.533 0.054 67.3);
}

.element {
  color: var(--pastel-brown);
  background-color: hsl(31 27% 40%);
  border-color: oklch(0.533 0.054 67.3);
}

Tailwind CSS v4

@theme {
  --color-pastel-brown: #82674b;
  --color-pastel-brown-50: #fff3e5;
  --color-pastel-brown-100: #f4e5d5;
  --color-pastel-brown-200: #e4d1bc;
  --color-pastel-brown-300: #cab39a;
  --color-pastel-brown-400: #b4997d;
  --color-pastel-brown-500: #9f8060;
  --color-pastel-brown-600: #866c52;
  --color-pastel-brown-700: #6b5641;
  --color-pastel-brown-800: #4f3f2f;
  --color-pastel-brown-900: #372b20;
  --color-pastel-brown-950: #22180f;
}

SCSS

$pastel-brown: #82674b;
$pastel-brown-rgb: 130, 103, 75;
$pastel-brown-light: mix(#fff, $pastel-brown, 20%);
$pastel-brown-dark: mix(#000, $pastel-brown, 20%);

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