Sienna Red

CSS

:root {
  --sienna-red: #b1635e;
  --sienna-red-rgb: 177 99 94;
  --sienna-red-oklch: oklch(0.587 0.102 24.5);
}

.element {
  color: var(--sienna-red);
  background-color: hsl(4 35% 53%);
  border-color: oklch(0.587 0.102 24.5);
}

Tailwind CSS v4

@theme {
  --color-sienna-red: #b1635e;
  --color-sienna-red-50: #ffebe6;
  --color-sienna-red-100: #ffdcd6;
  --color-sienna-red-200: #fdc4bd;
  --color-sienna-red-300: #e7a49c;
  --color-sienna-red-400: #d48680;
  --color-sienna-red-500: #c06964;
  --color-sienna-red-600: #a35a55;
  --color-sienna-red-700: #834744;
  --color-sienna-red-800: #613332;
  --color-sienna-red-900: #442322;
  --color-sienna-red-950: #2c1211;
}

SCSS

$sienna-red: #b1635e;
$sienna-red-rgb: 177, 99, 94;
$sienna-red-light: mix(#fff, $sienna-red, 20%);
$sienna-red-dark: mix(#000, $sienna-red, 20%);

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