Light Blue

CSS

:root {
  --light-blue: #add8e6;
  --light-blue-rgb: 173 216 230;
  --light-blue-oklch: oklch(0.856 0.049 219.7);
}

.element {
  color: var(--light-blue);
  background-color: hsl(195 53% 79%);
  border-color: oklch(0.856 0.049 219.7);
}

Tailwind CSS v4

@theme {
  --color-light-blue: #add8e6;
  --color-light-blue-50: #e7f9ff;
  --color-light-blue-100: #d7ecf4;
  --color-light-blue-200: #bfdae3;
  --color-light-blue-300: #9dbec9;
  --color-light-blue-400: #7ea6b2;
  --color-light-blue-500: #618e9d;
  --color-light-blue-600: #527884;
  --color-light-blue-700: #42606a;
  --color-light-blue-800: #2f474e;
  --color-light-blue-900: #203136;
  --color-light-blue-950: #0f1d21;
}

SCSS

$light-blue: #add8e6;
$light-blue-rgb: 173, 216, 230;
$light-blue-light: mix(#fff, $light-blue, 20%);
$light-blue-dark: mix(#000, $light-blue, 20%);

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