Champlain Blue

CSS

:root {
  --champlain-blue: #435572;
  --champlain-blue-rgb: 67 85 114;
  --champlain-blue-oklch: oklch(0.447 0.053 259.8);
}

.element {
  color: var(--champlain-blue);
  background-color: hsl(217 26% 35%);
  border-color: oklch(0.447 0.053 259.8);
}

Tailwind CSS v4

@theme {
  --color-champlain-blue: #435572;
  --color-champlain-blue-50: #edf6ff;
  --color-champlain-blue-100: #dee8fa;
  --color-champlain-blue-200: #c8d5ec;
  --color-champlain-blue-300: #a9b8d3;
  --color-champlain-blue-400: #8ca0be;
  --color-champlain-blue-500: #7287aa;
  --color-champlain-blue-600: #60728f;
  --color-champlain-blue-700: #4d5c73;
  --color-champlain-blue-800: #374355;
  --color-champlain-blue-900: #262e3b;
  --color-champlain-blue-950: #141b25;
}

SCSS

$champlain-blue: #435572;
$champlain-blue-rgb: 67, 85, 114;
$champlain-blue-light: mix(#fff, $champlain-blue, 20%);
$champlain-blue-dark: mix(#000, $champlain-blue, 20%);

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