#98CFFF

CSS

:root {
  --clear-sky: #98cfff;
  --clear-sky-rgb: 152 207 255;
  --clear-sky-oklch: oklch(0.834 0.089 245.5);
}

.element {
  color: var(--clear-sky);
  background-color: hsl(208 100% 80%);
  border-color: oklch(0.834 0.089 245.5);
}

Tailwind CSS v4

@theme {
  --color-clear-sky: #98cfff;
  --color-clear-sky-50: #e2f8ff;
  --color-clear-sky-100: #d1ebff;
  --color-clear-sky-200: #b7d8f9;
  --color-clear-sky-300: #93bce3;
  --color-clear-sky-400: #71a4d0;
  --color-clear-sky-500: #518cbd;
  --color-clear-sky-600: #4576a0;
  --color-clear-sky-700: #375f80;
  --color-clear-sky-800: #25465f;
  --color-clear-sky-900: #193042;
  --color-clear-sky-950: #091c2b;
}

SCSS

$clear-sky: #98cfff;
$clear-sky-rgb: 152, 207, 255;
$clear-sky-light: mix(#fff, $clear-sky, 20%);
$clear-sky-dark: mix(#000, $clear-sky, 20%);

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