#1769FF

CSS

:root {
  --blue-ribbon: #1769ff;
  --blue-ribbon-rgb: 23 105 255;
  --blue-ribbon-oklch: oklch(0.571 0.235 261.6);
}

.element {
  color: var(--blue-ribbon);
  background-color: hsl(219 100% 55%);
  border-color: oklch(0.571 0.235 261.6);
}

Tailwind CSS v4

@theme {
  --color-blue-ribbon: #1769ff;
  --color-blue-ribbon-50: #d2f5ff;
  --color-blue-ribbon-100: #bfe8ff;
  --color-blue-ribbon-200: #a0d2ff;
  --color-blue-ribbon-300: #77b2ff;
  --color-blue-ribbon-400: #4996ff;
  --color-blue-ribbon-500: #1875ff;
  --color-blue-ribbon-600: #1764f1;
  --color-blue-ribbon-700: #1350c2;
  --color-blue-ribbon-800: #003b91;
  --color-blue-ribbon-900: #012967;
  --color-blue-ribbon-950: #001548;
}

SCSS

$blue-ribbon: #1769ff;
$blue-ribbon-rgb: 23, 105, 255;
$blue-ribbon-light: mix(#fff, $blue-ribbon, 20%);
$blue-ribbon-dark: mix(#000, $blue-ribbon, 20%);

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