#44A4D8

CSS

:root {
  --high-blue: #44a4d8;
  --high-blue-rgb: 68 164 216;
  --high-blue-oklch: oklch(0.684 0.117 235.9);
}

.element {
  color: var(--high-blue);
  background-color: hsl(201 65% 56%);
  border-color: oklch(0.684 0.117 235.9);
}

Tailwind CSS v4

@theme {
  --color-high-blue: #44a4d8;
  --color-high-blue-50: #d7fbff;
  --color-high-blue-100: #c4eeff;
  --color-high-blue-200: #a5dcff;
  --color-high-blue-300: #7cc0ed;
  --color-high-blue-400: #50a9da;
  --color-high-blue-500: #1391c9;
  --color-high-blue-600: #167aaa;
  --color-high-blue-700: #136288;
  --color-high-blue-800: #064865;
  --color-high-blue-900: #053247;
  --color-high-blue-950: #001e2e;
}

SCSS

$high-blue: #44a4d8;
$high-blue-rgb: 68, 164, 216;
$high-blue-light: mix(#fff, $high-blue, 20%);
$high-blue-dark: mix(#000, $high-blue, 20%);

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