Sky Blue

CSS

:root {
  --sky-blue: #9fb9e2;
  --sky-blue-rgb: 159 185 226;
  --sky-blue-oklch: oklch(0.781 0.065 259.4);
}

.element {
  color: var(--sky-blue);
  background-color: hsl(217 54% 75%);
  border-color: oklch(0.781 0.065 259.4);
}

Tailwind CSS v4

@theme {
  --color-sky-blue: #9fb9e2;
  --color-sky-blue-50: #ebf6ff;
  --color-sky-blue-100: #dce9fe;
  --color-sky-blue-200: #c5d5f1;
  --color-sky-blue-300: #a5b8da;
  --color-sky-blue-400: #88a0c6;
  --color-sky-blue-500: #6c87b2;
  --color-sky-blue-600: #5c7296;
  --color-sky-blue-700: #495c78;
  --color-sky-blue-800: #344359;
  --color-sky-blue-900: #232e3e;
  --color-sky-blue-950: #121b27;
}

SCSS

$sky-blue: #9fb9e2;
$sky-blue-rgb: 159, 185, 226;
$sky-blue-light: mix(#fff, $sky-blue, 20%);
$sky-blue-dark: mix(#000, $sky-blue, 20%);

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