Forgotten Blue

CSS

:root {
  --forgotten-blue: #c0e5ec;
  --forgotten-blue-rgb: 192 229 236;
  --forgotten-blue-oklch: oklch(0.898 0.04 210.4);
}

.element {
  color: var(--forgotten-blue);
  background-color: hsl(190 54% 84%);
  border-color: oklch(0.898 0.04 210.4);
}

Tailwind CSS v4

@theme {
  --color-forgotten-blue: #c0e5ec;
  --color-forgotten-blue-50: #e9f8fc;
  --color-forgotten-blue-100: #daecf0;
  --color-forgotten-blue-200: #c2d9de;
  --color-forgotten-blue-300: #a1bdc3;
  --color-forgotten-blue-400: #84a5ac;
  --color-forgotten-blue-500: #678e95;
  --color-forgotten-blue-600: #58787e;
  --color-forgotten-blue-700: #466065;
  --color-forgotten-blue-800: #32464a;
  --color-forgotten-blue-900: #223133;
  --color-forgotten-blue-950: #111d1f;
}

SCSS

$forgotten-blue: #c0e5ec;
$forgotten-blue-rgb: 192, 229, 236;
$forgotten-blue-light: mix(#fff, $forgotten-blue, 20%);
$forgotten-blue-dark: mix(#000, $forgotten-blue, 20%);

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