#106CF7

CSS

:root {
  --blue-ribbon: #106cf7;
  --blue-ribbon-rgb: 16 108 247;
  --blue-ribbon-oklch: oklch(0.57 0.223 260.1);
}

.element {
  color: var(--blue-ribbon);
  background-color: hsl(216 94% 52%);
  border-color: oklch(0.57 0.223 260.1);
}

Tailwind CSS v4

@theme {
  --color-blue-ribbon: #106cf7;
  --color-blue-ribbon-50: #d3f6ff;
  --color-blue-ribbon-100: #bfe8ff;
  --color-blue-ribbon-200: #a0d3ff;
  --color-blue-ribbon-300: #77b4ff;
  --color-blue-ribbon-400: #4798ff;
  --color-blue-ribbon-500: #1079ff;
  --color-blue-ribbon-600: #1367ea;
  --color-blue-ribbon-700: #0f53bc;
  --color-blue-ribbon-800: #003d8d;
  --color-blue-ribbon-900: #002a64;
  --color-blue-ribbon-950: #001745;
}

SCSS

$blue-ribbon: #106cf7;
$blue-ribbon-rgb: 16, 108, 247;
$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);
}