#48A2DD

CSS

:root {
  --high-blue: #48a2dd;
  --high-blue-rgb: 72 162 221;
  --high-blue-oklch: oklch(0.683 0.122 240.7);
}

.element {
  color: var(--high-blue);
  background-color: hsl(204 69% 57%);
  border-color: oklch(0.683 0.122 240.7);
}

Tailwind CSS v4

@theme {
  --color-high-blue: #48a2dd;
  --color-high-blue-50: #d8faff;
  --color-high-blue-100: #c5eeff;
  --color-high-blue-200: #a7dbff;
  --color-high-blue-300: #7ebff1;
  --color-high-blue-400: #54a7df;
  --color-high-blue-500: #1f8fcf;
  --color-high-blue-600: #1e79ae;
  --color-high-blue-700: #18618c;
  --color-high-blue-800: #0b4768;
  --color-high-blue-900: #073149;
  --color-high-blue-950: #001d30;
}

SCSS

$high-blue: #48a2dd;
$high-blue-rgb: 72, 162, 221;
$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);
}