#AE9590

CSS

:root {
  --cortex: #ae9590;
  --cortex-rgb: 174 149 144;
  --cortex-oklch: oklch(0.691 0.031 31.2);
}

.element {
  color: var(--cortex);
  background-color: hsl(10 16% 62%);
  border-color: oklch(0.691 0.031 31.2);
}

Tailwind CSS v4

@theme {
  --color-cortex: #ae9590;
  --color-cortex-50: #fef2ef;
  --color-cortex-100: #f2e4e1;
  --color-cortex-200: #e1d0cc;
  --color-cortex-300: #c7b2ad;
  --color-cortex-400: #b09893;
  --color-cortex-500: #9a7f7a;
  --color-cortex-600: #826c67;
  --color-cortex-700: #685652;
  --color-cortex-800: #4d3f3c;
  --color-cortex-900: #352b29;
  --color-cortex-950: #201817;
}

SCSS

$cortex: #ae9590;
$cortex-rgb: 174, 149, 144;
$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);
}