#B29396

CSS

:root {
  --rosy-brown: #b29396;
  --rosy-brown-rgb: 178 147 150;
  --rosy-brown-oklch: oklch(0.692 0.037 11.5);
}

.element {
  color: var(--rosy-brown);
  background-color: hsl(354 17% 64%);
  border-color: oklch(0.692 0.037 11.5);
}

Tailwind CSS v4

@theme {
  --color-rosy-brown: #b29396;
  --color-rosy-brown-50: #fff1f2;
  --color-rosy-brown-100: #f4e3e4;
  --color-rosy-brown-200: #e4cecf;
  --color-rosy-brown-300: #cab0b2;
  --color-rosy-brown-400: #b39699;
  --color-rosy-brown-500: #9d7c80;
  --color-rosy-brown-600: #85696c;
  --color-rosy-brown-700: #6b5456;
  --color-rosy-brown-800: #4e3d3f;
  --color-rosy-brown-900: #372a2c;
  --color-rosy-brown-950: #211819;
}

SCSS

$rosy-brown: #b29396;
$rosy-brown-rgb: 178, 147, 150;
$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);
}