#DA0708

CSS

:root {
  --redsurrection: #da0708;
  --redsurrection-rgb: 218 7 8;
  --redsurrection-oklch: oklch(0.56 0.227 28.9);
}

.element {
  color: var(--redsurrection);
  background-color: hsl(360 94% 44%);
  border-color: oklch(0.56 0.227 28.9);
}

Tailwind CSS v4

@theme {
  --color-redsurrection: #da0708;
  --color-redsurrection-50: #ffdece;
  --color-redsurrection-100: #ffccba;
  --color-redsurrection-200: #ffae98;
  --color-redsurrection-300: #ff846c;
  --color-redsurrection-400: #ff5848;
  --color-redsurrection-500: #f90f0e;
  --color-redsurrection-600: #d21712;
  --color-redsurrection-700: #a9140f;
  --color-redsurrection-800: #7f0a0e;
  --color-redsurrection-900: #5a0709;
  --color-redsurrection-950: #3c0000;
}

SCSS

$redsurrection: #da0708;
$redsurrection-rgb: 218, 7, 8;
$redsurrection-light: mix(#fff, $redsurrection, 20%);
$redsurrection-dark: mix(#000, $redsurrection, 20%);

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