#D03F54

CSS

:root {
  --flesh-and-blood: #d03f54;
  --flesh-and-blood-rgb: 208 63 84;
  --flesh-and-blood-oklch: oklch(0.583 0.181 16.6);
}

.element {
  color: var(--flesh-and-blood);
  background-color: hsl(351 61% 53%);
  border-color: oklch(0.583 0.181 16.6);
}

Tailwind CSS v4

@theme {
  --color-flesh-and-blood: #d03f54;
  --color-flesh-and-blood-50: #ffe1e1;
  --color-flesh-and-blood-100: #ffd0d0;
  --color-flesh-and-blood-200: #ffb4b6;
  --color-flesh-and-blood-300: #ff8f93;
  --color-flesh-and-blood-400: #f66a78;
  --color-flesh-and-blood-500: #e4415a;
  --color-flesh-and-blood-600: #c1394d;
  --color-flesh-and-blood-700: #9b2d3d;
  --color-flesh-and-blood-800: #741f2e;
  --color-flesh-and-blood-900: #52151f;
  --color-flesh-and-blood-950: #36050f;
}

SCSS

$flesh-and-blood: #d03f54;
$flesh-and-blood-rgb: 208, 63, 84;
$flesh-and-blood-light: mix(#fff, $flesh-and-blood, 20%);
$flesh-and-blood-dark: mix(#000, $flesh-and-blood, 20%);

.element {
  color: $flesh-and-blood;
  box-shadow: 0 0 0 2px rgba($flesh-and-blood, 0.35);
}