#7FC3DE

CSS

:root {
  --sky-fall: #7fc3de;
  --sky-fall-rgb: 127 195 222;
  --sky-fall-oklch: oklch(0.782 0.079 225.1);
}

.element {
  color: var(--sky-fall);
  background-color: hsl(197 59% 68%);
  border-color: oklch(0.782 0.079 225.1);
}

Tailwind CSS v4

@theme {
  --color-sky-fall: #7fc3de;
  --color-sky-fall-50: #dffaff;
  --color-sky-fall-100: #ceeefd;
  --color-sky-fall-200: #b2dcef;
  --color-sky-fall-300: #8dc0d7;
  --color-sky-fall-400: #69a9c2;
  --color-sky-fall-500: #4491ad;
  --color-sky-fall-600: #3b7b92;
  --color-sky-fall-700: #2f6275;
  --color-sky-fall-800: #204856;
  --color-sky-fall-900: #15323c;
  --color-sky-fall-950: #061e26;
}

SCSS

$sky-fall: #7fc3de;
$sky-fall-rgb: 127, 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);
}