#EC9F45

CSS

:root {
  --nuclear-mango: #ec9f45;
  --nuclear-mango-rgb: 236 159 69;
  --nuclear-mango-oklch: oklch(0.763 0.138 67);
}

.element {
  color: var(--nuclear-mango);
  background-color: hsl(32 81% 60%);
  border-color: oklch(0.763 0.138 67);
}

Tailwind CSS v4

@theme {
  --color-nuclear-mango: #ec9f45;
  --color-nuclear-mango-50: #ffefcb;
  --color-nuclear-mango-100: #ffe0b7;
  --color-nuclear-mango-200: #fbca93;
  --color-nuclear-mango-300: #e5aa66;
  --color-nuclear-mango-400: #d48d37;
  --color-nuclear-mango-500: #c17000;
  --color-nuclear-mango-600: #a35f00;
  --color-nuclear-mango-700: #834c00;
  --color-nuclear-mango-800: #623600;
  --color-nuclear-mango-900: #452500;
  --color-nuclear-mango-950: #2c1300;
}

SCSS

$nuclear-mango: #ec9f45;
$nuclear-mango-rgb: 236, 159, 69;
$nuclear-mango-light: mix(#fff, $nuclear-mango, 20%);
$nuclear-mango-dark: mix(#000, $nuclear-mango, 20%);

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