#F96F63

CSS

:root {
  --pastel-red: #f96f63;
  --pastel-red-rgb: 249 111 99;
  --pastel-red-oklch: oklch(0.707 0.172 27.3);
}

.element {
  color: var(--pastel-red);
  background-color: hsl(5 93% 68%);
  border-color: oklch(0.707 0.172 27.3);
}

Tailwind CSS v4

@theme {
  --color-pastel-red: #f96f63;
  --color-pastel-red-50: #ffe4d9;
  --color-pastel-red-100: #ffd3c7;
  --color-pastel-red-200: #ffb8aa;
  --color-pastel-red-300: #ff9483;
  --color-pastel-red-400: #f37064;
  --color-pastel-red-500: #e14a42;
  --color-pastel-red-600: #be4039;
  --color-pastel-red-700: #99332d;
  --color-pastel-red-800: #722322;
  --color-pastel-red-900: #511816;
  --color-pastel-red-950: #350708;
}

SCSS

$pastel-red: #f96f63;
$pastel-red-rgb: 249, 111, 99;
$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);
}