#B29399

CSS

:root {
  --rosy-brown: #b29399;
  --rosy-brown-rgb: 178 147 153;
  --rosy-brown-oklch: oklch(0.693 0.038 5.1);
}

.element {
  color: var(--rosy-brown);
  background-color: hsl(348 17% 64%);
  border-color: oklch(0.693 0.038 5.1);
}

Tailwind CSS v4

@theme {
  --color-rosy-brown: #b29399;
  --color-rosy-brown-50: #fff1f3;
  --color-rosy-brown-100: #f4e3e6;
  --color-rosy-brown-200: #e4ced1;
  --color-rosy-brown-300: #cab0b4;
  --color-rosy-brown-400: #b3969b;
  --color-rosy-brown-500: #9d7c83;
  --color-rosy-brown-600: #85696f;
  --color-rosy-brown-700: #6a5458;
  --color-rosy-brown-800: #4e3d41;
  --color-rosy-brown-900: #362a2d;
  --color-rosy-brown-950: #21181a;
}

SCSS

$rosy-brown: #b29399;
$rosy-brown-rgb: 178, 147, 153;
$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);
}