Left Bank Blue

CSS

:root {
  --left-bank-blue: #699cab;
  --left-bank-blue-rgb: 105 156 171;
  --left-bank-blue-oklch: oklch(0.662 0.059 218.2);
}

.element {
  color: var(--left-bank-blue);
  background-color: hsl(194 28% 54%);
  border-color: oklch(0.662 0.059 218.2);
}

Tailwind CSS v4

@theme {
  --color-left-bank-blue: #699cab;
  --color-left-bank-blue-50: #e4faff;
  --color-left-bank-blue-100: #d4edf6;
  --color-left-bank-blue-200: #badbe6;
  --color-left-bank-blue-300: #97bfcc;
  --color-left-bank-blue-400: #77a7b6;
  --color-left-bank-blue-500: #5790a0;
  --color-left-bank-blue-600: #4a7a87;
  --color-left-bank-blue-700: #3b616c;
  --color-left-bank-blue-800: #2a484f;
  --color-left-bank-blue-900: #1c3237;
  --color-left-bank-blue-950: #0c1e22;
}

SCSS

$left-bank-blue: #699cab;
$left-bank-blue-rgb: 105, 156, 171;
$left-bank-blue-light: mix(#fff, $left-bank-blue, 20%);
$left-bank-blue-dark: mix(#000, $left-bank-blue, 20%);

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