#B34B45

CSS

:root {
  --intrigue-red: #b34b45;
  --intrigue-red-rgb: 179 75 69;
  --intrigue-red-oklch: oklch(0.548 0.137 25.9);
}

.element {
  color: var(--intrigue-red);
  background-color: hsl(3 44% 49%);
  border-color: oklch(0.548 0.137 25.9);
}

Tailwind CSS v4

@theme {
  --color-intrigue-red: #b34b45;
  --color-intrigue-red-50: #ffe7e0;
  --color-intrigue-red-100: #ffd7cf;
  --color-intrigue-red-200: #ffbeb4;
  --color-intrigue-red-300: #f69c90;
  --color-intrigue-red-400: #e47c73;
  --color-intrigue-red-500: #d15c54;
  --color-intrigue-red-600: #b14e48;
  --color-intrigue-red-700: #8e3e39;
  --color-intrigue-red-800: #6a2c2a;
  --color-intrigue-red-900: #4b1e1c;
  --color-intrigue-red-950: #310d0d;
}

SCSS

$intrigue-red: #b34b45;
$intrigue-red-rgb: 179, 75, 69;
$intrigue-red-light: mix(#fff, $intrigue-red, 20%);
$intrigue-red-dark: mix(#000, $intrigue-red, 20%);

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