#FA722A

CSS

:root {
  --burning-orange: #fa722a;
  --burning-orange-rgb: 250 114 42;
  --burning-orange-oklch: oklch(0.706 0.185 44.5);
}

.element {
  color: var(--burning-orange);
  background-color: hsl(21 95% 57%);
  border-color: oklch(0.706 0.185 44.5);
}

Tailwind CSS v4

@theme {
  --color-burning-orange: #fa722a;
  --color-burning-orange-50: #ffe6c9;
  --color-burning-orange-100: #ffd5b4;
  --color-burning-orange-200: #ffbb90;
  --color-burning-orange-300: #ff9760;
  --color-burning-orange-400: #f47332;
  --color-burning-orange-500: #e34e00;
  --color-burning-orange-600: #bf4300;
  --color-burning-orange-700: #9a3600;
  --color-burning-orange-800: #732500;
  --color-burning-orange-900: #521900;
  --color-burning-orange-950: #360800;
}

SCSS

$burning-orange: #fa722a;
$burning-orange-rgb: 250, 114, 42;
$burning-orange-light: mix(#fff, $burning-orange, 20%);
$burning-orange-dark: mix(#000, $burning-orange, 20%);

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