First Shade of Blue

CSS

:root {
  --first-shade-of-blue: #cbe1f2;
  --first-shade-of-blue-rgb: 203 225 242;
  --first-shade-of-blue-oklch: oklch(0.899 0.033 241.1);
}

.element {
  color: var(--first-shade-of-blue);
  background-color: hsl(206 60% 87%);
  border-color: oklch(0.899 0.033 241.1);
}

Tailwind CSS v4

@theme {
  --color-first-shade-of-blue: #cbe1f2;
  --color-first-shade-of-blue-50: #edf6fe;
  --color-first-shade-of-blue-100: #dfe9f2;
  --color-first-shade-of-blue-200: #c9d6e2;
  --color-first-shade-of-blue-300: #a9bac7;
  --color-first-shade-of-blue-400: #8ea1b1;
  --color-first-shade-of-blue-500: #73899a;
  --color-first-shade-of-blue-600: #627483;
  --color-first-shade-of-blue-700: #4e5d69;
  --color-first-shade-of-blue-800: #38444d;
  --color-first-shade-of-blue-900: #262f35;
  --color-first-shade-of-blue-950: #151c21;
}

SCSS

$first-shade-of-blue: #cbe1f2;
$first-shade-of-blue-rgb: 203, 225, 242;
$first-shade-of-blue-light: mix(#fff, $first-shade-of-blue, 20%);
$first-shade-of-blue-dark: mix(#000, $first-shade-of-blue, 20%);

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