#145D96

CSS

:root {
  --hyper-blue: #145d96;
  --hyper-blue-rgb: 20 93 150;
  --hyper-blue-oklch: oklch(0.466 0.115 247.9);
}

.element {
  color: var(--hyper-blue);
  background-color: hsl(206 76% 33%);
  border-color: oklch(0.466 0.115 247.9);
}

Tailwind CSS v4

@theme {
  --color-hyper-blue: #145d96;
  --color-hyper-blue-50: #ddf9ff;
  --color-hyper-blue-100: #ccecff;
  --color-hyper-blue-200: #afd9ff;
  --color-hyper-blue-300: #8abcf0;
  --color-hyper-blue-400: #65a4df;
  --color-hyper-blue-500: #3f8bce;
  --color-hyper-blue-600: #3776ae;
  --color-hyper-blue-700: #2b5e8c;
  --color-hyper-blue-800: #1b4667;
  --color-hyper-blue-900: #123049;
  --color-hyper-blue-950: #041c30;
}

SCSS

$hyper-blue: #145d96;
$hyper-blue-rgb: 20, 93, 150;
$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);
}