#4CA2DD

CSS

:root {
  --high-blue: #4ca2dd;
  --high-blue-rgb: 76 162 221;
  --high-blue-oklch: oklch(0.684 0.12 241.5);
}

.element {
  color: var(--high-blue);
  background-color: hsl(204 68% 58%);
  border-color: oklch(0.684 0.12 241.5);
}

Tailwind CSS v4

@theme {
  --color-high-blue: #4ca2dd;
  --color-high-blue-50: #d9faff;
  --color-high-blue-100: #c6edff;
  --color-high-blue-200: #a8dbff;
  --color-high-blue-300: #80bff1;
  --color-high-blue-400: #57a7df;
  --color-high-blue-500: #268ece;
  --color-high-blue-600: #2378ae;
  --color-high-blue-700: #1c608c;
  --color-high-blue-800: #0e4767;
  --color-high-blue-900: #093149;
  --color-high-blue-950: #001d30;
}

SCSS

$high-blue: #4ca2dd;
$high-blue-rgb: 76, 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);
}