#7DC6E4

CSS

:root {
  --sky-fall: #7dc6e4;
  --sky-fall-rgb: 125 198 228;
  --sky-fall-oklch: oklch(0.79 0.084 226.1);
}

.element {
  color: var(--sky-fall);
  background-color: hsl(197 66% 69%);
  border-color: oklch(0.79 0.084 226.1);
}

Tailwind CSS v4

@theme {
  --color-sky-fall: #7dc6e4;
  --color-sky-fall-50: #ddfbff;
  --color-sky-fall-100: #cceefe;
  --color-sky-fall-200: #afdcf1;
  --color-sky-fall-300: #89c0da;
  --color-sky-fall-400: #65a9c5;
  --color-sky-fall-500: #3e91b1;
  --color-sky-fall-600: #367b95;
  --color-sky-fall-700: #2b6378;
  --color-sky-fall-800: #1c4958;
  --color-sky-fall-900: #13323e;
  --color-sky-fall-950: #041e27;
}

SCSS

$sky-fall: #7dc6e4;
$sky-fall-rgb: 125, 198, 228;
$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);
}