#226BF6

CSS

:root {
  --blue-ribbon: #226bf6;
  --blue-ribbon-rgb: 34 107 246;
  --blue-ribbon-oklch: oklch(0.57 0.22 261.7);
}

.element {
  color: var(--blue-ribbon);
  background-color: hsl(219 92% 55%);
  border-color: oklch(0.57 0.22 261.7);
}

Tailwind CSS v4

@theme {
  --color-blue-ribbon: #226bf6;
  --color-blue-ribbon-50: #d5f5ff;
  --color-blue-ribbon-100: #c2e8ff;
  --color-blue-ribbon-200: #a3d3ff;
  --color-blue-ribbon-300: #7cb3ff;
  --color-blue-ribbon-400: #5097ff;
  --color-blue-ribbon-500: #2678ff;
  --color-blue-ribbon-600: #2266e9;
  --color-blue-ribbon-700: #1b52bb;
  --color-blue-ribbon-800: #073c8c;
  --color-blue-ribbon-900: #052a64;
  --color-blue-ribbon-950: #001645;
}

SCSS

$blue-ribbon: #226bf6;
$blue-ribbon-rgb: 34, 107, 246;
$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);
}