#B74745

CSS

:root {
  --intrigue-red: #b74745;
  --intrigue-red-rgb: 183 71 69;
  --intrigue-red-oklch: oklch(0.549 0.146 24.2);
}

.element {
  color: var(--intrigue-red);
  background-color: hsl(1 45% 49%);
  border-color: oklch(0.549 0.146 24.2);
}

Tailwind CSS v4

@theme {
  --color-intrigue-red: #b74745;
  --color-intrigue-red-50: #ffe6df;
  --color-intrigue-red-100: #ffd6ce;
  --color-intrigue-red-200: #ffbcb4;
  --color-intrigue-red-300: #f99990;
  --color-intrigue-red-400: #e87973;
  --color-intrigue-red-500: #d65754;
  --color-intrigue-red-600: #b44a48;
  --color-intrigue-red-700: #913b39;
  --color-intrigue-red-800: #6c2a2a;
  --color-intrigue-red-900: #4c1c1c;
  --color-intrigue-red-950: #320c0d;
}

SCSS

$intrigue-red: #b74745;
$intrigue-red-rgb: 183, 71, 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);
}