#2CA4DF

CSS

:root {
  --high-blue: #2ca4df;
  --high-blue-rgb: 44 164 223;
  --high-blue-oklch: oklch(0.681 0.133 235.8);
}

.element {
  color: var(--high-blue);
  background-color: hsl(200 74% 52%);
  border-color: oklch(0.681 0.133 235.8);
}

Tailwind CSS v4

@theme {
  --color-high-blue: #2ca4df;
  --color-high-blue-50: #d3fcff;
  --color-high-blue-100: #bfefff;
  --color-high-blue-200: #9eddff;
  --color-high-blue-300: #72c1f3;
  --color-high-blue-400: #3eaae2;
  --color-high-blue-500: #0091d1;
  --color-high-blue-600: #007bb1;
  --color-high-blue-700: #00628e;
  --color-high-blue-800: #004969;
  --color-high-blue-900: #00324a;
  --color-high-blue-950: #001e30;
}

SCSS

$high-blue: #2ca4df;
$high-blue-rgb: 44, 164, 223;
$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);
}