Plum Blue

CSS

:root {
  --plum-blue: #4b6176;
  --plum-blue-rgb: 75 97 118;
  --plum-blue-oklch: oklch(0.483 0.043 247.5);
}

.element {
  color: var(--plum-blue);
  background-color: hsl(209 22% 38%);
  border-color: oklch(0.483 0.043 247.5);
}

Tailwind CSS v4

@theme {
  --color-plum-blue: #4b6176;
  --color-plum-blue-50: #ecf6ff;
  --color-plum-blue-100: #dde9f6;
  --color-plum-blue-200: #c7d6e6;
  --color-plum-blue-300: #a7bacd;
  --color-plum-blue-400: #8ba1b7;
  --color-plum-blue-500: #7089a2;
  --color-plum-blue-600: #5f7489;
  --color-plum-blue-700: #4c5d6e;
  --color-plum-blue-800: #364451;
  --color-plum-blue-900: #252f38;
  --color-plum-blue-950: #141c23;
}

SCSS

$plum-blue: #4b6176;
$plum-blue-rgb: 75, 97, 118;
$plum-blue-light: mix(#fff, $plum-blue, 20%);
$plum-blue-dark: mix(#000, $plum-blue, 20%);

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