#48A2E1

CSS

:root {
  --high-blue: #48a2e1;
  --high-blue-rgb: 72 162 225;
  --high-blue-oklch: oklch(0.685 0.126 242.4);
}

.element {
  color: var(--high-blue);
  background-color: hsl(205 72% 58%);
  border-color: oklch(0.685 0.126 242.4);
}

Tailwind CSS v4

@theme {
  --color-high-blue: #48a2e1;
  --color-high-blue-50: #d8faff;
  --color-high-blue-100: #c5edff;
  --color-high-blue-200: #a6dbff;
  --color-high-blue-300: #7ebff4;
  --color-high-blue-400: #53a7e3;
  --color-high-blue-500: #1e8ed2;
  --color-high-blue-600: #1d78b1;
  --color-high-blue-700: #18608e;
  --color-high-blue-800: #0a4769;
  --color-high-blue-900: #07314a;
  --color-high-blue-950: #001d31;
}

SCSS

$high-blue: #48a2e1;
$high-blue-rgb: 72, 162, 225;
$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);
}