#AF4D4F

CSS

:root {
  --intrigue-red: #af4d4f;
  --intrigue-red-rgb: 175 77 79;
  --intrigue-red-oklch: oklch(0.547 0.129 21.1);
}

.element {
  color: var(--intrigue-red);
  background-color: hsl(359 39% 49%);
  border-color: oklch(0.547 0.129 21.1);
}

Tailwind CSS v4

@theme {
  --color-intrigue-red: #af4d4f;
  --color-intrigue-red-50: #ffe8e4;
  --color-intrigue-red-100: #ffd8d4;
  --color-intrigue-red-200: #ffbfbb;
  --color-intrigue-red-300: #f29d98;
  --color-intrigue-red-400: #e07e7d;
  --color-intrigue-red-500: #cd5e60;
  --color-intrigue-red-600: #ad5052;
  --color-intrigue-red-700: #8b4041;
  --color-intrigue-red-800: #682e30;
  --color-intrigue-red-900: #491f21;
  --color-intrigue-red-950: #2f0e10;
}

SCSS

$intrigue-red: #af4d4f;
$intrigue-red-rgb: 175, 77, 79;
$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);
}