#E52818

CSS

:root {
  --kiss-of-the-scorpion: #e52818;
  --kiss-of-the-scorpion-rgb: 229 40 24;
  --kiss-of-the-scorpion-oklch: oklch(0.594 0.223 29.9);
}

.element {
  color: var(--kiss-of-the-scorpion);
  background-color: hsl(5 81% 50%);
  border-color: oklch(0.594 0.223 29.9);
}

Tailwind CSS v4

@theme {
  --color-kiss-of-the-scorpion: #e52818;
  --color-kiss-of-the-scorpion-50: #ffdecd;
  --color-kiss-of-the-scorpion-100: #ffccb9;
  --color-kiss-of-the-scorpion-200: #ffaf97;
  --color-kiss-of-the-scorpion-300: #ff866b;
  --color-kiss-of-the-scorpion-400: #ff5b46;
  --color-kiss-of-the-scorpion-500: #f71a08;
  --color-kiss-of-the-scorpion-600: #d11d0e;
  --color-kiss-of-the-scorpion-700: #a8180c;
  --color-kiss-of-the-scorpion-800: #7e0e0d;
  --color-kiss-of-the-scorpion-900: #590908;
  --color-kiss-of-the-scorpion-950: #3c0000;
}

SCSS

$kiss-of-the-scorpion: #e52818;
$kiss-of-the-scorpion-rgb: 229, 40, 24;
$kiss-of-the-scorpion-light: mix(#fff, $kiss-of-the-scorpion, 20%);
$kiss-of-the-scorpion-dark: mix(#000, $kiss-of-the-scorpion, 20%);

.element {
  color: $kiss-of-the-scorpion;
  box-shadow: 0 0 0 2px rgba($kiss-of-the-scorpion, 0.35);
}