#669CC7

CSS

:root {
  --canadian-tuxedo: #669cc7;
  --canadian-tuxedo-rgb: 102 156 199;
  --canadian-tuxedo-oklch: oklch(0.672 0.086 243.6);
}

.element {
  color: var(--canadian-tuxedo);
  background-color: hsl(207 46% 59%);
  border-color: oklch(0.672 0.086 243.6);
}

Tailwind CSS v4

@theme {
  --color-canadian-tuxedo: #669cc7;
  --color-canadian-tuxedo-50: #e2f8ff;
  --color-canadian-tuxedo-100: #d1ecff;
  --color-canadian-tuxedo-200: #b7d9f7;
  --color-canadian-tuxedo-300: #93bde1;
  --color-canadian-tuxedo-400: #71a5ce;
  --color-canadian-tuxedo-500: #508cbb;
  --color-canadian-tuxedo-600: #45779e;
  --color-canadian-tuxedo-700: #375f7f;
  --color-canadian-tuxedo-800: #25465d;
  --color-canadian-tuxedo-900: #193041;
  --color-canadian-tuxedo-950: #091d2a;
}

SCSS

$canadian-tuxedo: #669cc7;
$canadian-tuxedo-rgb: 102, 156, 199;
$canadian-tuxedo-light: mix(#fff, $canadian-tuxedo, 20%);
$canadian-tuxedo-dark: mix(#000, $canadian-tuxedo, 20%);

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