#B49297

CSS

:root {
  --rosy-brown: #b49297;
  --rosy-brown-rgb: 180 146 151;
  --rosy-brown-oklch: oklch(0.693 0.041 8.3);
}

.element {
  color: var(--rosy-brown);
  background-color: hsl(351 18% 64%);
  border-color: oklch(0.693 0.041 8.3);
}

Tailwind CSS v4

@theme {
  --color-rosy-brown: #b49297;
  --color-rosy-brown-50: #fff1f2;
  --color-rosy-brown-100: #f5e3e4;
  --color-rosy-brown-200: #e5cdd0;
  --color-rosy-brown-300: #ccafb2;
  --color-rosy-brown-400: #b59599;
  --color-rosy-brown-500: #9f7b81;
  --color-rosy-brown-600: #87686d;
  --color-rosy-brown-700: #6c5357;
  --color-rosy-brown-800: #4f3d40;
  --color-rosy-brown-900: #372a2c;
  --color-rosy-brown-950: #221719;
}

SCSS

$rosy-brown: #b49297;
$rosy-brown-rgb: 180, 146, 151;
$rosy-brown-light: mix(#fff, $rosy-brown, 20%);
$rosy-brown-dark: mix(#000, $rosy-brown, 20%);

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