#AD9591

CSS

:root {
  --cortex: #ad9591;
  --cortex-rgb: 173 149 145;
  --cortex-oklch: oklch(0.69 0.029 29);
}

.element {
  color: var(--cortex);
  background-color: hsl(9 15% 62%);
  border-color: oklch(0.69 0.029 29);
}

Tailwind CSS v4

@theme {
  --color-cortex: #ad9591;
  --color-cortex-50: #fdf2f0;
  --color-cortex-100: #f2e5e2;
  --color-cortex-200: #e1d0cd;
  --color-cortex-300: #c6b2ae;
  --color-cortex-400: #af9895;
  --color-cortex-500: #997f7b;
  --color-cortex-600: #816c68;
  --color-cortex-700: #675653;
  --color-cortex-800: #4c3f3d;
  --color-cortex-900: #352b2a;
  --color-cortex-950: #201817;
}

SCSS

$cortex: #ad9591;
$cortex-rgb: 173, 149, 145;
$cortex-light: mix(#fff, $cortex, 20%);
$cortex-dark: mix(#000, $cortex, 20%);

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