Blue Streak

CSS

:root {
  --blue-streak: #2266bb;
  --blue-streak-rgb: 34 102 187;
  --blue-streak-oklch: oklch(0.515 0.15 256.2);
}

.element {
  color: var(--blue-streak);
  background-color: hsl(213 69% 43%);
  border-color: oklch(0.515 0.15 256.2);
}

Tailwind CSS v4

@theme {
  --color-blue-streak: #2266bb;
  --color-blue-streak-50: #dbf7ff;
  --color-blue-streak-100: #caeaff;
  --color-blue-streak-200: #add6ff;
  --color-blue-streak-300: #87b9ff;
  --color-blue-streak-400: #60a0f5;
  --color-blue-streak-500: #3a85e7;
  --color-blue-streak-600: #3271c3;
  --color-blue-streak-700: #285b9c;
  --color-blue-streak-800: #174375;
  --color-blue-streak-900: #0f2e52;
  --color-blue-streak-950: #031a37;
}

SCSS

$blue-streak: #2266bb;
$blue-streak-rgb: 34, 102, 187;
$blue-streak-light: mix(#fff, $blue-streak, 20%);
$blue-streak-dark: mix(#000, $blue-streak, 20%);

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