#FA6400

CSS

:root {
  --safety-orange: #fa6400;
  --safety-orange-rgb: 250 100 0;
  --safety-orange-oklch: oklch(0.686 0.201 43.5);
}

.element {
  color: var(--safety-orange);
  background-color: hsl(24 100% 49%);
  border-color: oklch(0.686 0.201 43.5);
}

Tailwind CSS v4

@theme {
  --color-safety-orange: #fa6400;
  --color-safety-orange-50: #ffe4c5;
  --color-safety-orange-100: #ffd3b0;
  --color-safety-orange-200: #ffb88a;
  --color-safety-orange-300: #ff9358;
  --color-safety-orange-400: #fb6d23;
  --color-safety-orange-500: #ea4300;
  --color-safety-orange-600: #c63a00;
  --color-safety-orange-700: #9f2f00;
  --color-safety-orange-800: #771f00;
  --color-safety-orange-900: #541500;
  --color-safety-orange-950: #380500;
}

SCSS

$safety-orange: #fa6400;
$safety-orange-rgb: 250, 100, 0;
$safety-orange-light: mix(#fff, $safety-orange, 20%);
$safety-orange-dark: mix(#000, $safety-orange, 20%);

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