Pulsating Blue

CSS

:root {
  --pulsating-blue: #01678d;
  --pulsating-blue-rgb: 1 103 141;
  --pulsating-blue-oklch: oklch(0.483 0.099 232.8);
}

.element {
  color: var(--pulsating-blue);
  background-color: hsl(196 99% 28%);
  border-color: oklch(0.483 0.099 232.8);
}

Tailwind CSS v4

@theme {
  --color-pulsating-blue: #01678d;
  --color-pulsating-blue-50: #dbfbff;
  --color-pulsating-blue-100: #c9eeff;
  --color-pulsating-blue-200: #abdcf9;
  --color-pulsating-blue-300: #84c0e3;
  --color-pulsating-blue-400: #5da9cf;
  --color-pulsating-blue-500: #3191bd;
  --color-pulsating-blue-600: #2c7a9f;
  --color-pulsating-blue-700: #236280;
  --color-pulsating-blue-800: #15485e;
  --color-pulsating-blue-900: #0e3242;
  --color-pulsating-blue-950: #011e2a;
}

SCSS

$pulsating-blue: #01678d;
$pulsating-blue-rgb: 1, 103, 141;
$pulsating-blue-light: mix(#fff, $pulsating-blue, 20%);
$pulsating-blue-dark: mix(#000, $pulsating-blue, 20%);

.element {
  color: $pulsating-blue;
  box-shadow: 0 0 0 2px rgba($pulsating-blue, 0.35);
}