#D13D57

CSS

:root {
  --flesh-and-blood: #d13d57;
  --flesh-and-blood-rgb: 209 61 87;
  --flesh-and-blood-oklch: oklch(0.583 0.184 15);
}

.element {
  color: var(--flesh-and-blood);
  background-color: hsl(349 62% 53%);
  border-color: oklch(0.583 0.184 15);
}

Tailwind CSS v4

@theme {
  --color-flesh-and-blood: #d13d57;
  --color-flesh-and-blood-50: #ffe1e2;
  --color-flesh-and-blood-100: #ffcfd2;
  --color-flesh-and-blood-200: #ffb4b8;
  --color-flesh-and-blood-300: #ff8d95;
  --color-flesh-and-blood-400: #f7697b;
  --color-flesh-and-blood-500: #e53e5e;
  --color-flesh-and-blood-600: #c23750;
  --color-flesh-and-blood-700: #9c2c3f;
  --color-flesh-and-blood-800: #741e30;
  --color-flesh-and-blood-900: #521420;
  --color-flesh-and-blood-950: #360410;
}

SCSS

$flesh-and-blood: #d13d57;
$flesh-and-blood-rgb: 209, 61, 87;
$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);
}