#B84649

CSS

:root {
  --intrigue-red: #b84649;
  --intrigue-red-rgb: 184 70 73;
  --intrigue-red-oklch: oklch(0.55 0.148 21.8);
}

.element {
  color: var(--intrigue-red);
  background-color: hsl(358 45% 50%);
  border-color: oklch(0.55 0.148 21.8);
}

Tailwind CSS v4

@theme {
  --color-intrigue-red: #b84649;
  --color-intrigue-red-50: #ffe5e1;
  --color-intrigue-red-100: #ffd5d0;
  --color-intrigue-red-200: #ffbcb6;
  --color-intrigue-red-300: #fa9892;
  --color-intrigue-red-400: #e97777;
  --color-intrigue-red-500: #d65558;
  --color-intrigue-red-600: #b5494b;
  --color-intrigue-red-700: #923a3c;
  --color-intrigue-red-800: #6c292d;
  --color-intrigue-red-900: #4c1c1e;
  --color-intrigue-red-950: #320b0e;
}

SCSS

$intrigue-red: #b84649;
$intrigue-red-rgb: 184, 70, 73;
$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);
}