#2065F5

CSS

:root {
  --blue-ribbon: #2065f5;
  --blue-ribbon-rgb: 32 101 245;
  --blue-ribbon-oklch: oklch(0.557 0.226 262.5);
}

.element {
  color: var(--blue-ribbon);
  background-color: hsl(221 91% 54%);
  border-color: oklch(0.557 0.226 262.5);
}

Tailwind CSS v4

@theme {
  --color-blue-ribbon: #2065f5;
  --color-blue-ribbon-50: #d5f5ff;
  --color-blue-ribbon-100: #c2e7ff;
  --color-blue-ribbon-200: #a4d2ff;
  --color-blue-ribbon-300: #7cb2ff;
  --color-blue-ribbon-400: #5196ff;
  --color-blue-ribbon-500: #2876ff;
  --color-blue-ribbon-600: #2465ec;
  --color-blue-ribbon-700: #1c51be;
  --color-blue-ribbon-800: #083c8f;
  --color-blue-ribbon-900: #062965;
  --color-blue-ribbon-950: #001646;
}

SCSS

$blue-ribbon: #2065f5;
$blue-ribbon-rgb: 32, 101, 245;
$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);
}