Porch Song

CSS

:root {
  --porch-song: #566f8c;
  --porch-song-rgb: 86 111 140;
  --porch-song-oklch: oklch(0.533 0.055 252.5);
}

.element {
  color: var(--porch-song);
  background-color: hsl(212 24% 44%);
  border-color: oklch(0.533 0.055 252.5);
}

Tailwind CSS v4

@theme {
  --color-porch-song: #566f8c;
  --color-porch-song-50: #ebf6ff;
  --color-porch-song-100: #dce9fa;
  --color-porch-song-200: #c5d6ec;
  --color-porch-song-300: #a5b9d3;
  --color-porch-song-400: #88a1be;
  --color-porch-song-500: #6c89aa;
  --color-porch-song-600: #5c7490;
  --color-porch-song-700: #495d73;
  --color-porch-song-800: #344455;
  --color-porch-song-900: #242f3b;
  --color-porch-song-950: #121b25;
}

SCSS

$porch-song: #566f8c;
$porch-song-rgb: 86, 111, 140;
$porch-song-light: mix(#fff, $porch-song, 20%);
$porch-song-dark: mix(#000, $porch-song, 20%);

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