#8CCBFD

CSS

:root {
  --clear-sky: #8ccbfd;
  --clear-sky-rgb: 140 203 253;
  --clear-sky-oklch: oklch(0.818 0.096 243.2);
}

.element {
  color: var(--clear-sky);
  background-color: hsl(207 97% 77%);
  border-color: oklch(0.818 0.096 243.2);
}

Tailwind CSS v4

@theme {
  --color-clear-sky: #8ccbfd;
  --color-clear-sky-50: #dff9ff;
  --color-clear-sky-100: #ceecff;
  --color-clear-sky-200: #b3d9fb;
  --color-clear-sky-300: #8ebde6;
  --color-clear-sky-400: #6ba5d3;
  --color-clear-sky-500: #478dc1;
  --color-clear-sky-600: #3e77a3;
  --color-clear-sky-700: #315f82;
  --color-clear-sky-800: #204660;
  --color-clear-sky-900: #153144;
  --color-clear-sky-950: #061d2c;
}

SCSS

$clear-sky: #8ccbfd;
$clear-sky-rgb: 140, 203, 253;
$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);
}