#FB6E64

CSS

:root {
  --pastel-red: #fb6e64;
  --pastel-red-rgb: 251 110 100;
  --pastel-red-oklch: oklch(0.708 0.175 26.5);
}

.element {
  color: var(--pastel-red);
  background-color: hsl(4 95% 69%);
  border-color: oklch(0.708 0.175 26.5);
}

Tailwind CSS v4

@theme {
  --color-pastel-red: #fb6e64;
  --color-pastel-red-50: #ffe3d9;
  --color-pastel-red-100: #ffd2c7;
  --color-pastel-red-200: #ffb7aa;
  --color-pastel-red-300: #ff9284;
  --color-pastel-red-400: #f46f65;
  --color-pastel-red-500: #e34842;
  --color-pastel-red-600: #bf3f39;
  --color-pastel-red-700: #9a322d;
  --color-pastel-red-800: #732222;
  --color-pastel-red-900: #511716;
  --color-pastel-red-950: #360708;
}

SCSS

$pastel-red: #fb6e64;
$pastel-red-rgb: 251, 110, 100;
$pastel-red-light: mix(#fff, $pastel-red, 20%);
$pastel-red-dark: mix(#000, $pastel-red, 20%);

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