#FF6D30

CSS

:root {
  --extreme-carrot: #ff6d30;
  --extreme-carrot-rgb: 255 109 48;
  --extreme-carrot-oklch: oklch(0.707 0.192 40.9);
}

.element {
  color: var(--extreme-carrot);
  background-color: hsl(18 100% 59%);
  border-color: oklch(0.707 0.192 40.9);
}

Tailwind CSS v4

@theme {
  --color-extreme-carrot: #ff6d30;
  --color-extreme-carrot-50: #ffe4ca;
  --color-extreme-carrot-100: #ffd4b5;
  --color-extreme-carrot-200: #ffb991;
  --color-extreme-carrot-300: #ff9363;
  --color-extreme-carrot-400: #f96f37;
  --color-extreme-carrot-500: #e74600;
  --color-extreme-carrot-600: #c33d00;
  --color-extreme-carrot-700: #9d3100;
  --color-extreme-carrot-800: #762100;
  --color-extreme-carrot-900: #531600;
  --color-extreme-carrot-950: #370600;
}

SCSS

$extreme-carrot: #ff6d30;
$extreme-carrot-rgb: 255, 109, 48;
$extreme-carrot-light: mix(#fff, $extreme-carrot, 20%);
$extreme-carrot-dark: mix(#000, $extreme-carrot, 20%);

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