#FB7127

CSS

:root {
  --burning-orange: #fb7127;
  --burning-orange-rgb: 251 113 39;
  --burning-orange-oklch: oklch(0.706 0.187 44.4);
}

.element {
  color: var(--burning-orange);
  background-color: hsl(21 96% 57%);
  border-color: oklch(0.706 0.187 44.4);
}

Tailwind CSS v4

@theme {
  --color-burning-orange: #fb7127;
  --color-burning-orange-50: #ffe5c8;
  --color-burning-orange-100: #ffd5b3;
  --color-burning-orange-200: #ffbb8f;
  --color-burning-orange-300: #ff965f;
  --color-burning-orange-400: #f57330;
  --color-burning-orange-500: #e44c00;
  --color-burning-orange-600: #c04200;
  --color-burning-orange-700: #9b3500;
  --color-burning-orange-800: #742400;
  --color-burning-orange-900: #521800;
  --color-burning-orange-950: #360700;
}

SCSS

$burning-orange: #fb7127;
$burning-orange-rgb: 251, 113, 39;
$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);
}