#B9918F

CSS

:root {
  --rosy-brown: #b9918f;
  --rosy-brown-rgb: 185 145 143;
  --rosy-brown-oklch: oklch(0.693 0.049 21.7);
}

.element {
  color: var(--rosy-brown);
  background-color: hsl(3 23% 64%);
  border-color: oklch(0.693 0.049 21.7);
}

Tailwind CSS v4

@theme {
  --color-rosy-brown: #b9918f;
  --color-rosy-brown-50: #fff0ee;
  --color-rosy-brown-100: #f8e2e0;
  --color-rosy-brown-200: #e9cdca;
  --color-rosy-brown-300: #cfaeab;
  --color-rosy-brown-400: #ba9492;
  --color-rosy-brown-500: #a47a78;
  --color-rosy-brown-600: #8b6766;
  --color-rosy-brown-700: #6f5251;
  --color-rosy-brown-800: #523c3b;
  --color-rosy-brown-900: #392929;
  --color-rosy-brown-950: #231717;
}

SCSS

$rosy-brown: #b9918f;
$rosy-brown-rgb: 185, 145, 143;
$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);
}