#F66D90

CSS

:root {
  --blush-hour: #f66d90;
  --blush-hour-rgb: 246 109 144;
  --blush-hour-oklch: oklch(0.71 0.17 6.5);
}

.element {
  color: var(--blush-hour);
  background-color: hsl(345 88% 70%);
  border-color: oklch(0.71 0.17 6.5);
}

Tailwind CSS v4

@theme {
  --color-blush-hour: #f66d90;
  --color-blush-hour-50: #ffe2eb;
  --color-blush-hour-100: #ffd1dc;
  --color-blush-hour-200: #ffb6c6;
  --color-blush-hour-300: #ff90a6;
  --color-blush-hour-400: #ef6e8e;
  --color-blush-hour-500: #dd4774;
  --color-blush-hour-600: #bb3e62;
  --color-blush-hour-700: #96314e;
  --color-blush-hour-800: #6f223b;
  --color-blush-hour-900: #4f1728;
  --color-blush-hour-950: #340716;
}

SCSS

$blush-hour: #f66d90;
$blush-hour-rgb: 246, 109, 144;
$blush-hour-light: mix(#fff, $blush-hour, 20%);
$blush-hour-dark: mix(#000, $blush-hour, 20%);

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