#D24254

CSS

:root {
  --flesh-and-blood: #d24254;
  --flesh-and-blood-rgb: 210 66 84;
  --flesh-and-blood-oklch: oklch(0.589 0.18 17.6);
}

.element {
  color: var(--flesh-and-blood);
  background-color: hsl(353 62% 54%);
  border-color: oklch(0.589 0.18 17.6);
}

Tailwind CSS v4

@theme {
  --color-flesh-and-blood: #d24254;
  --color-flesh-and-blood-50: #ffe1e0;
  --color-flesh-and-blood-100: #ffd0d0;
  --color-flesh-and-blood-200: #ffb5b5;
  --color-flesh-and-blood-300: #ff8f92;
  --color-flesh-and-blood-400: #f66b76;
  --color-flesh-and-blood-500: #e44258;
  --color-flesh-and-blood-600: #c13a4b;
  --color-flesh-and-blood-700: #9b2e3c;
  --color-flesh-and-blood-800: #74202d;
  --color-flesh-and-blood-900: #52151e;
  --color-flesh-and-blood-950: #36050e;
}

SCSS

$flesh-and-blood: #d24254;
$flesh-and-blood-rgb: 210, 66, 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);
}