#B7E2F1

CSS

:root {
  --polar-wind: #b7e2f1;
  --polar-wind-rgb: 183 226 241;
  --polar-wind-oklch: oklch(0.887 0.049 221.1);
}

.element {
  color: var(--polar-wind);
  background-color: hsl(196 67% 83%);
  border-color: oklch(0.887 0.049 221.1);
}

Tailwind CSS v4

@theme {
  --color-polar-wind: #b7e2f1;
  --color-polar-wind-50: #e7f9ff;
  --color-polar-wind-100: #d7ecf4;
  --color-polar-wind-200: #bfd9e4;
  --color-polar-wind-300: #9dbeca;
  --color-polar-wind-400: #7fa6b3;
  --color-polar-wind-500: #618e9d;
  --color-polar-wind-600: #537885;
  --color-polar-wind-700: #42606b;
  --color-polar-wind-800: #2f474e;
  --color-polar-wind-900: #203136;
  --color-polar-wind-950: #0f1d21;
}

SCSS

$polar-wind: #b7e2f1;
$polar-wind-rgb: 183, 226, 241;
$polar-wind-light: mix(#fff, $polar-wind, 20%);
$polar-wind-dark: mix(#000, $polar-wind, 20%);

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