#BDE4E9

CSS

:root {
  --tip-of-the-iceberg: #bde4e9;
  --tip-of-the-iceberg-rgb: 189 228 233;
  --tip-of-the-iceberg-oklch: oklch(0.893 0.041 206);
}

.element {
  color: var(--tip-of-the-iceberg);
  background-color: hsl(187 50% 83%);
  border-color: oklch(0.893 0.041 206);
}

Tailwind CSS v4

@theme {
  --color-tip-of-the-iceberg: #bde4e9;
  --color-tip-of-the-iceberg-50: #e8f9fb;
  --color-tip-of-the-iceberg-100: #d9ecef;
  --color-tip-of-the-iceberg-200: #c1dadd;
  --color-tip-of-the-iceberg-300: #a0bec2;
  --color-tip-of-the-iceberg-400: #83a6aa;
  --color-tip-of-the-iceberg-500: #668e94;
  --color-tip-of-the-iceberg-600: #56787d;
  --color-tip-of-the-iceberg-700: #456064;
  --color-tip-of-the-iceberg-800: #314749;
  --color-tip-of-the-iceberg-900: #223133;
  --color-tip-of-the-iceberg-950: #111d1e;
}

SCSS

$tip-of-the-iceberg: #bde4e9;
$tip-of-the-iceberg-rgb: 189, 228, 233;
$tip-of-the-iceberg-light: mix(#fff, $tip-of-the-iceberg, 20%);
$tip-of-the-iceberg-dark: mix(#000, $tip-of-the-iceberg, 20%);

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