Frozen Blue

CSS

:root {
  --frozen-blue: #a5c5d9;
  --frozen-blue-rgb: 165 197 217;
  --frozen-blue-oklch: oklch(0.806 0.045 235.5);
}

.element {
  color: var(--frozen-blue);
  background-color: hsl(203 41% 75%);
  border-color: oklch(0.806 0.045 235.5);
}

Tailwind CSS v4

@theme {
  --color-frozen-blue: #a5c5d9;
  --color-frozen-blue-50: #eaf7ff;
  --color-frozen-blue-100: #dbeaf5;
  --color-frozen-blue-200: #c3d8e5;
  --color-frozen-blue-300: #a3bbcc;
  --color-frozen-blue-400: #86a3b6;
  --color-frozen-blue-500: #6a8ba0;
  --color-frozen-blue-600: #5a7687;
  --color-frozen-blue-700: #485e6c;
  --color-frozen-blue-800: #334550;
  --color-frozen-blue-900: #233037;
  --color-frozen-blue-950: #121c22;
}

SCSS

$frozen-blue: #a5c5d9;
$frozen-blue-rgb: 165, 197, 217;
$frozen-blue-light: mix(#fff, $frozen-blue, 20%);
$frozen-blue-dark: mix(#000, $frozen-blue, 20%);

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