Hello Winter

CSS

:root {
  --hello-winter: #99ffee;
  --hello-winter-rgb: 153 255 238;
  --hello-winter-oklch: oklch(0.933 0.099 182.2);
}

.element {
  color: var(--hello-winter);
  background-color: hsl(170 100% 80%);
  border-color: oklch(0.933 0.099 182.2);
}

Tailwind CSS v4

@theme {
  --color-hello-winter: #99ffee;
  --color-hello-winter-50: #d7fff8;
  --color-hello-winter-100: #c4f3ec;
  --color-hello-winter-200: #a4e3d9;
  --color-hello-winter-300: #7ac8bd;
  --color-hello-winter-400: #51b2a3;
  --color-hello-winter-500: #0d9b8b;
  --color-hello-winter-600: #148376;
  --color-hello-winter-700: #11695e;
  --color-hello-winter-800: #0b4d44;
  --color-hello-winter-900: #07362f;
  --color-hello-winter-950: #00211b;
}

SCSS

$hello-winter: #99ffee;
$hello-winter-rgb: 153, 255, 238;
$hello-winter-light: mix(#fff, $hello-winter, 20%);
$hello-winter-dark: mix(#000, $hello-winter, 20%);

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