Bank Blue

CSS

:root {
  --bank-blue: #3e4652;
  --bank-blue-rgb: 62 70 82;
  --bank-blue-oklch: oklch(0.392 0.023 258.4);
}

.element {
  color: var(--bank-blue);
  background-color: hsl(216 14% 28%);
  border-color: oklch(0.392 0.023 258.4);
}

Tailwind CSS v4

@theme {
  --color-bank-blue: #3e4652;
  --color-bank-blue-50: #f1f5fc;
  --color-bank-blue-100: #e3e8f0;
  --color-bank-blue-200: #cfd5de;
  --color-bank-blue-300: #b1b8c3;
  --color-bank-blue-400: #969fac;
  --color-bank-blue-500: #7d8796;
  --color-bank-blue-600: #6a727f;
  --color-bank-blue-700: #555b65;
  --color-bank-blue-800: #3d434a;
  --color-bank-blue-900: #2a2e34;
  --color-bank-blue-950: #181b1f;
}

SCSS

$bank-blue: #3e4652;
$bank-blue-rgb: 62, 70, 82;
$bank-blue-light: mix(#fff, $bank-blue, 20%);
$bank-blue-dark: mix(#000, $bank-blue, 20%);

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