#8CB3E3

CSS

:root {
  --adrift-on-the-nile: #8cb3e3;
  --adrift-on-the-nile-rgb: 140 179 227;
  --adrift-on-the-nile-oklch: oklch(0.756 0.081 254);
}

.element {
  color: var(--adrift-on-the-nile);
  background-color: hsl(213 61% 72%);
  border-color: oklch(0.756 0.081 254);
}

Tailwind CSS v4

@theme {
  --color-adrift-on-the-nile: #8cb3e3;
  --color-adrift-on-the-nile-50: #e6f7ff;
  --color-adrift-on-the-nile-100: #d7eaff;
  --color-adrift-on-the-nile-200: #bed6f7;
  --color-adrift-on-the-nile-300: #9cbae1;
  --color-adrift-on-the-nile-400: #7da1ce;
  --color-adrift-on-the-nile-500: #5f89bb;
  --color-adrift-on-the-nile-600: #51749e;
  --color-adrift-on-the-nile-700: #415d7f;
  --color-adrift-on-the-nile-800: #2d445e;
  --color-adrift-on-the-nile-900: #1e2f42;
  --color-adrift-on-the-nile-950: #0e1b2a;
}

SCSS

$adrift-on-the-nile: #8cb3e3;
$adrift-on-the-nile-rgb: 140, 179, 227;
$adrift-on-the-nile-light: mix(#fff, $adrift-on-the-nile, 20%);
$adrift-on-the-nile-dark: mix(#000, $adrift-on-the-nile, 20%);

.element {
  color: $adrift-on-the-nile;
  box-shadow: 0 0 0 2px rgba($adrift-on-the-nile, 0.35);
}