Mourning Blue

CSS

:root {
  --mourning-blue: #1651bd;
  --mourning-blue-rgb: 22 81 189;
  --mourning-blue-oklch: oklch(0.468 0.18 261.4);
}

.element {
  color: var(--mourning-blue);
  background-color: hsl(219 79% 41%);
  border-color: oklch(0.468 0.18 261.4);
}

Tailwind CSS v4

@theme {
  --color-mourning-blue: #1651bd;
  --color-mourning-blue-50: #dbf6ff;
  --color-mourning-blue-100: #c9e8ff;
  --color-mourning-blue-200: #acd4ff;
  --color-mourning-blue-300: #87b5ff;
  --color-mourning-blue-400: #5f9bff;
  --color-mourning-blue-500: #3b7ffb;
  --color-mourning-blue-600: #336cd4;
  --color-mourning-blue-700: #2956aa;
  --color-mourning-blue-800: #17407f;
  --color-mourning-blue-900: #0f2c5a;
  --color-mourning-blue-950: #03183d;
}

SCSS

$mourning-blue: #1651bd;
$mourning-blue-rgb: 22, 81, 189;
$mourning-blue-light: mix(#fff, $mourning-blue, 20%);
$mourning-blue-dark: mix(#000, $mourning-blue, 20%);

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