#FD6C5E

CSS

:root {
  --pastel-red: #fd6c5e;
  --pastel-red-rgb: 253 108 94;
  --pastel-red-oklch: oklch(0.708 0.18 28);
}

.element {
  color: var(--pastel-red);
  background-color: hsl(5 98% 68%);
  border-color: oklch(0.708 0.18 28);
}

Tailwind CSS v4

@theme {
  --color-pastel-red: #fd6c5e;
  --color-pastel-red-50: #ffe3d7;
  --color-pastel-red-100: #ffd2c4;
  --color-pastel-red-200: #ffb7a6;
  --color-pastel-red-300: #ff917f;
  --color-pastel-red-400: #f66d60;
  --color-pastel-red-500: #e5453b;
  --color-pastel-red-600: #c13c33;
  --color-pastel-red-700: #9b3028;
  --color-pastel-red-800: #74211f;
  --color-pastel-red-900: #521614;
  --color-pastel-red-950: #360606;
}

SCSS

$pastel-red: #fd6c5e;
$pastel-red-rgb: 253, 108, 94;
$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);
}