Hello Summer

CSS

:root {
  --hello-summer: #55bbff;
  --hello-summer-rgb: 85 187 255;
  --hello-summer-oklch: oklch(0.76 0.136 241);
}

.element {
  color: var(--hello-summer);
  background-color: hsl(204 100% 67%);
  border-color: oklch(0.76 0.136 241);
}

Tailwind CSS v4

@theme {
  --color-hello-summer: #55bbff;
  --color-hello-summer-50: #d5fbff;
  --color-hello-summer-100: #c1eeff;
  --color-hello-summer-200: #a1dcff;
  --color-hello-summer-300: #77bff8;
  --color-hello-summer-400: #47a7e7;
  --color-hello-summer-500: #008fd7;
  --color-hello-summer-600: #0079b5;
  --color-hello-summer-700: #026192;
  --color-hello-summer-800: #00476c;
  --color-hello-summer-900: #00324c;
  --color-hello-summer-950: #001d32;
}

SCSS

$hello-summer: #55bbff;
$hello-summer-rgb: 85, 187, 255;
$hello-summer-light: mix(#fff, $hello-summer, 20%);
$hello-summer-dark: mix(#000, $hello-summer, 20%);

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