Evening Over the Ocean

CSS

:root {
  --evening-over-the-ocean: #434d66;
  --evening-over-the-ocean-rgb: 67 77 102;
  --evening-over-the-ocean-oklch: oklch(0.422 0.044 267.6);
}

.element {
  color: var(--evening-over-the-ocean);
  background-color: hsl(223 21% 33%);
  border-color: oklch(0.422 0.044 267.6);
}

Tailwind CSS v4

@theme {
  --color-evening-over-the-ocean: #434d66;
  --color-evening-over-the-ocean-50: #f0f5ff;
  --color-evening-over-the-ocean-100: #e2e8f7;
  --color-evening-over-the-ocean-200: #cdd4e8;
  --color-evening-over-the-ocean-300: #aeb7cf;
  --color-evening-over-the-ocean-400: #939eb9;
  --color-evening-over-the-ocean-500: #7986a4;
  --color-evening-over-the-ocean-600: #67718b;
  --color-evening-over-the-ocean-700: #525a6f;
  --color-evening-over-the-ocean-800: #3b4252;
  --color-evening-over-the-ocean-900: #292e39;
  --color-evening-over-the-ocean-950: #161b23;
}

SCSS

$evening-over-the-ocean: #434d66;
$evening-over-the-ocean-rgb: 67, 77, 102;
$evening-over-the-ocean-light: mix(#fff, $evening-over-the-ocean, 20%);
$evening-over-the-ocean-dark: mix(#000, $evening-over-the-ocean, 20%);

.element {
  color: $evening-over-the-ocean;
  box-shadow: 0 0 0 2px rgba($evening-over-the-ocean, 0.35);
}