#DF264E

CSS

:root {
  --cosmic-red: #df264e;
  --cosmic-red-rgb: 223 38 78;
  --cosmic-red-oklch: oklch(0.588 0.215 16.3);
}

.element {
  color: var(--cosmic-red);
  background-color: hsl(347 74% 51%);
  border-color: oklch(0.588 0.215 16.3);
}

Tailwind CSS v4

@theme {
  --color-cosmic-red: #df264e;
  --color-cosmic-red-50: #ffddde;
  --color-cosmic-red-100: #ffcbcc;
  --color-cosmic-red-200: #ffadb1;
  --color-cosmic-red-300: #ff848c;
  --color-cosmic-red-400: #ff5a71;
  --color-cosmic-red-500: #f31d52;
  --color-cosmic-red-600: #cd1e46;
  --color-cosmic-red-700: #a51938;
  --color-cosmic-red-800: #7b0f2a;
  --color-cosmic-red-900: #570a1c;
  --color-cosmic-red-950: #3a000d;
}

SCSS

$cosmic-red: #df264e;
$cosmic-red-rgb: 223, 38, 78;
$cosmic-red-light: mix(#fff, $cosmic-red, 20%);
$cosmic-red-dark: mix(#000, $cosmic-red, 20%);

.element {
  color: $cosmic-red;
  box-shadow: 0 0 0 2px rgba($cosmic-red, 0.35);
}