#84C3DE

CSS

:root {
  --sky-fall: #84c3de;
  --sky-fall-rgb: 132 195 222;
  --sky-fall-oklch: oklch(0.784 0.075 226.8);
}

.element {
  color: var(--sky-fall);
  background-color: hsl(198 58% 69%);
  border-color: oklch(0.784 0.075 226.8);
}

Tailwind CSS v4

@theme {
  --color-sky-fall: #84c3de;
  --color-sky-fall-50: #e0faff;
  --color-sky-fall-100: #cfedfc;
  --color-sky-fall-200: #b4dbee;
  --color-sky-fall-300: #90bfd6;
  --color-sky-fall-400: #6da8c1;
  --color-sky-fall-500: #4a90ad;
  --color-sky-fall-600: #407a92;
  --color-sky-fall-700: #336275;
  --color-sky-fall-800: #234856;
  --color-sky-fall-900: #17323c;
  --color-sky-fall-950: #081e26;
}

SCSS

$sky-fall: #84c3de;
$sky-fall-rgb: 132, 195, 222;
$sky-fall-light: mix(#fff, $sky-fall, 20%);
$sky-fall-dark: mix(#000, $sky-fall, 20%);

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