#D6E3EE

CSS

:root {
  --iceberg: #d6e3ee;
  --iceberg-rgb: 214 227 238;
  --iceberg-oklch: oklch(0.909 0.021 243.4);
}

.element {
  color: var(--iceberg);
  background-color: hsl(208 41% 89%);
  border-color: oklch(0.909 0.021 243.4);
}

Tailwind CSS v4

@theme {
  --color-iceberg: #d6e3ee;
  --color-iceberg-50: #f0f6fb;
  --color-iceberg-100: #e2e9ee;
  --color-iceberg-200: #cdd5dd;
  --color-iceberg-300: #afb9c1;
  --color-iceberg-400: #95a0aa;
  --color-iceberg-500: #7b8893;
  --color-iceberg-600: #68737c;
  --color-iceberg-700: #535c64;
  --color-iceberg-800: #3c4349;
  --color-iceberg-900: #292f33;
  --color-iceberg-950: #171b1e;
}

SCSS

$iceberg: #d6e3ee;
$iceberg-rgb: 214, 227, 238;
$iceberg-light: mix(#fff, $iceberg, 20%);
$iceberg-dark: mix(#000, $iceberg, 20%);

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