#F5753A

CSS

:root {
  --extreme-carrot: #f5753a;
  --extreme-carrot-rgb: 245 117 58;
  --extreme-carrot-oklch: oklch(0.704 0.173 43.3);
}

.element {
  color: var(--extreme-carrot);
  background-color: hsl(19 90% 59%);
  border-color: oklch(0.704 0.173 43.3);
}

Tailwind CSS v4

@theme {
  --color-extreme-carrot: #f5753a;
  --color-extreme-carrot-50: #ffe7cd;
  --color-extreme-carrot-100: #ffd6b8;
  --color-extreme-carrot-200: #ffbd96;
  --color-extreme-carrot-300: #ff9969;
  --color-extreme-carrot-400: #f07740;
  --color-extreme-carrot-500: #de5300;
  --color-extreme-carrot-600: #bc4700;
  --color-extreme-carrot-700: #973900;
  --color-extreme-carrot-800: #712704;
  --color-extreme-carrot-900: #501b04;
  --color-extreme-carrot-950: #350a00;
}

SCSS

$extreme-carrot: #f5753a;
$extreme-carrot-rgb: 245, 117, 58;
$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);
}