#AC504B

CSS

:root {
  --intrigue-red: #ac504b;
  --intrigue-red-rgb: 172 80 75;
  --intrigue-red-oklch: oklch(0.546 0.122 25);
}

.element {
  color: var(--intrigue-red);
  background-color: hsl(3 39% 48%);
  border-color: oklch(0.546 0.122 25);
}

Tailwind CSS v4

@theme {
  --color-intrigue-red: #ac504b;
  --color-intrigue-red-50: #ffe9e3;
  --color-intrigue-red-100: #ffd9d2;
  --color-intrigue-red-200: #ffc1b8;
  --color-intrigue-red-300: #ef9f96;
  --color-intrigue-red-400: #dd817a;
  --color-intrigue-red-500: #ca625c;
  --color-intrigue-red-600: #ab534e;
  --color-intrigue-red-700: #89433e;
  --color-intrigue-red-800: #662f2e;
  --color-intrigue-red-900: #48201f;
  --color-intrigue-red-950: #2f0f0f;
}

SCSS

$intrigue-red: #ac504b;
$intrigue-red-rgb: 172, 80, 75;
$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);
}