#BB9090

CSS

:root {
  --rosy-brown: #bb9090;
  --rosy-brown-rgb: 187 144 144;
  --rosy-brown-oklch: oklch(0.694 0.052 18.5);
}

.element {
  color: var(--rosy-brown);
  background-color: hsl(0 24% 65%);
  border-color: oklch(0.694 0.052 18.5);
}

Tailwind CSS v4

@theme {
  --color-rosy-brown: #bb9090;
  --color-rosy-brown-50: #fff0ef;
  --color-rosy-brown-100: #f9e1e0;
  --color-rosy-brown-200: #eacccb;
  --color-rosy-brown-300: #d1adac;
  --color-rosy-brown-400: #bc9392;
  --color-rosy-brown-500: #a67879;
  --color-rosy-brown-600: #8c6666;
  --color-rosy-brown-700: #715252;
  --color-rosy-brown-800: #533b3c;
  --color-rosy-brown-900: #3a2929;
  --color-rosy-brown-950: #241617;
}

SCSS

$rosy-brown: #bb9090;
$rosy-brown-rgb: 187, 144, 144;
$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);
}