#48A3DC

CSS

:root {
  --high-blue: #48a3dc;
  --high-blue-rgb: 72 163 220;
  --high-blue-oklch: oklch(0.685 0.12 239.5);
}

.element {
  color: var(--high-blue);
  background-color: hsl(203 68% 57%);
  border-color: oklch(0.685 0.12 239.5);
}

Tailwind CSS v4

@theme {
  --color-high-blue: #48a3dc;
  --color-high-blue-50: #d8faff;
  --color-high-blue-100: #c5eeff;
  --color-high-blue-200: #a6dbff;
  --color-high-blue-300: #7ebff0;
  --color-high-blue-400: #53a8de;
  --color-high-blue-500: #1d8fcd;
  --color-high-blue-600: #1d79ad;
  --color-high-blue-700: #18618b;
  --color-high-blue-800: #0a4867;
  --color-high-blue-900: #073248;
  --color-high-blue-950: #001d2f;
}

SCSS

$high-blue: #48a3dc;
$high-blue-rgb: 72, 163, 220;
$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);
}