Traffic Red

CSS

:root {
  --traffic-red: #ff1c1c;
  --traffic-red-rgb: 255 28 28;
  --traffic-red-oklch: oklch(0.635 0.25 28.3);
}

.element {
  color: var(--traffic-red);
  background-color: hsl(0 100% 55%);
  border-color: oklch(0.635 0.25 28.3);
}

Tailwind CSS v4

@theme {
  --color-traffic-red: #ff1c1c;
  --color-traffic-red-50: #ffdbca;
  --color-traffic-red-100: #ffc8b6;
  --color-traffic-red-200: #ffa892;
  --color-traffic-red-300: #ff7c65;
  --color-traffic-red-400: #ff4a3e;
  --color-traffic-red-500: #ff0000;
  --color-traffic-red-600: #da0000;
  --color-traffic-red-700: #b00000;
  --color-traffic-red-800: #840006;
  --color-traffic-red-900: #5d0004;
  --color-traffic-red-950: #3f0000;
}

SCSS

$traffic-red: #ff1c1c;
$traffic-red-rgb: 255, 28, 28;
$traffic-red-light: mix(#fff, $traffic-red, 20%);
$traffic-red-dark: mix(#000, $traffic-red, 20%);

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