#A0DEE5

CSS

:root {
  --blizzard-blue: #a0dee5;
  --blizzard-blue-rgb: 160 222 229;
  --blizzard-blue-oklch: oklch(0.861 0.063 204.8);
}

.element {
  color: var(--blizzard-blue);
  background-color: hsl(186 57% 76%);
  border-color: oklch(0.861 0.063 204.8);
}

Tailwind CSS v4

@theme {
  --color-blizzard-blue: #a0dee5;
  --color-blizzard-blue-50: #e1fbfe;
  --color-blizzard-blue-100: #d1eef3;
  --color-blizzard-blue-200: #b6dce2;
  --color-blizzard-blue-300: #92c1c8;
  --color-blizzard-blue-400: #71aab0;
  --color-blizzard-blue-500: #4f939a;
  --color-blizzard-blue-600: #437c82;
  --color-blizzard-blue-700: #366368;
  --color-blizzard-blue-800: #26494c;
  --color-blizzard-blue-900: #193335;
  --color-blizzard-blue-950: #091e20;
}

SCSS

$blizzard-blue: #a0dee5;
$blizzard-blue-rgb: 160, 222, 229;
$blizzard-blue-light: mix(#fff, $blizzard-blue, 20%);
$blizzard-blue-dark: mix(#000, $blizzard-blue, 20%);

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