#E80F15

CSS

:root {
  --breath-of-fire: #e80f15;
  --breath-of-fire-rgb: 232 15 21;
  --breath-of-fire-oklch: oklch(0.588 0.236 28.2);
}

.element {
  color: var(--breath-of-fire);
  background-color: hsl(358 88% 48%);
  border-color: oklch(0.588 0.236 28.2);
}

Tailwind CSS v4

@theme {
  --color-breath-of-fire: #e80f15;
  --color-breath-of-fire-50: #ffdccd;
  --color-breath-of-fire-100: #ffcab9;
  --color-breath-of-fire-200: #ffab97;
  --color-breath-of-fire-300: #ff816b;
  --color-breath-of-fire-400: #ff5346;
  --color-breath-of-fire-500: #fd0007;
  --color-breath-of-fire-600: #d5020e;
  --color-breath-of-fire-700: #ac070c;
  --color-breath-of-fire-800: #81020d;
  --color-breath-of-fire-900: #5b0308;
  --color-breath-of-fire-950: #3d0000;
}

SCSS

$breath-of-fire: #e80f15;
$breath-of-fire-rgb: 232, 15, 21;
$breath-of-fire-light: mix(#fff, $breath-of-fire, 20%);
$breath-of-fire-dark: mix(#000, $breath-of-fire, 20%);

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