#9FE2EA

CSS

:root {
  --blizzard-blue: #9fe2ea;
  --blizzard-blue-rgb: 159 226 234;
  --blizzard-blue-oklch: oklch(0.871 0.068 205.3);
}

.element {
  color: var(--blizzard-blue);
  background-color: hsl(186 64% 77%);
  border-color: oklch(0.871 0.068 205.3);
}

Tailwind CSS v4

@theme {
  --color-blizzard-blue: #9fe2ea;
  --color-blizzard-blue-50: #e0fbff;
  --color-blizzard-blue-100: #cfeff4;
  --color-blizzard-blue-200: #b3dde3;
  --color-blizzard-blue-300: #8fc2c9;
  --color-blizzard-blue-400: #6daab2;
  --color-blizzard-blue-500: #49939c;
  --color-blizzard-blue-600: #3f7d84;
  --color-blizzard-blue-700: #326469;
  --color-blizzard-blue-800: #23494d;
  --color-blizzard-blue-900: #173335;
  --color-blizzard-blue-950: #081f21;
}

SCSS

$blizzard-blue: #9fe2ea;
$blizzard-blue-rgb: 159, 226, 234;
$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);
}