#005F93

CSS

:root {
  --hyper-blue: #005f93;
  --hyper-blue-rgb: 0 95 147;
  --hyper-blue-oklch: oklch(0.466 0.112 242.9);
}

.element {
  color: var(--hyper-blue);
  background-color: hsl(201 100% 29%);
  border-color: oklch(0.466 0.112 242.9);
}

Tailwind CSS v4

@theme {
  --color-hyper-blue: #005f93;
  --color-hyper-blue-50: #dbf9ff;
  --color-hyper-blue-100: #c9edff;
  --color-hyper-blue-200: #acdaff;
  --color-hyper-blue-300: #86beed;
  --color-hyper-blue-400: #5fa6dc;
  --color-hyper-blue-500: #358dca;
  --color-hyper-blue-600: #2f78ab;
  --color-hyper-blue-700: #256089;
  --color-hyper-blue-800: #174765;
  --color-hyper-blue-900: #0f3147;
  --color-hyper-blue-950: #021d2e;
}

SCSS

$hyper-blue: #005f93;
$hyper-blue-rgb: 0, 95, 147;
$hyper-blue-light: mix(#fff, $hyper-blue, 20%);
$hyper-blue-dark: mix(#000, $hyper-blue, 20%);

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