#AE603A

CSS

:root {
  --monument-valley: #ae603a;
  --monument-valley-rgb: 174 96 58;
  --monument-valley-oklch: oklch(0.572 0.114 45.6);
}

.element {
  color: var(--monument-valley);
  background-color: hsl(20 50% 45%);
  border-color: oklch(0.572 0.114 45.6);
}

Tailwind CSS v4

@theme {
  --color-monument-valley: #ae603a;
  --color-monument-valley-50: #ffecda;
  --color-monument-valley-100: #ffddc8;
  --color-monument-valley-200: #fec6ab;
  --color-monument-valley-300: #e8a684;
  --color-monument-valley-400: #d68864;
  --color-monument-valley-500: #c36b40;
  --color-monument-valley-600: #a55b38;
  --color-monument-valley-700: #84492c;
  --color-monument-valley-800: #633420;
  --color-monument-valley-900: #452315;
  --color-monument-valley-950: #2d1207;
}

SCSS

$monument-valley: #ae603a;
$monument-valley-rgb: 174, 96, 58;
$monument-valley-light: mix(#fff, $monument-valley, 20%);
$monument-valley-dark: mix(#000, $monument-valley, 20%);

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