Starlight Blue

CSS

:root {
  --starlight-blue: #b5ced4;
  --starlight-blue-rgb: 181 206 212;
  --starlight-blue-oklch: oklch(0.835 0.028 213.8);
}

.element {
  color: var(--starlight-blue);
  background-color: hsl(192 26% 77%);
  border-color: oklch(0.835 0.028 213.8);
}

Tailwind CSS v4

@theme {
  --color-starlight-blue: #b5ced4;
  --color-starlight-blue-50: #edf7fa;
  --color-starlight-blue-100: #deeaee;
  --color-starlight-blue-200: #c8d8dc;
  --color-starlight-blue-300: #a8bbc1;
  --color-starlight-blue-400: #8ca3a9;
  --color-starlight-blue-500: #718b92;
  --color-starlight-blue-600: #60767b;
  --color-starlight-blue-700: #4d5e63;
  --color-starlight-blue-800: #374548;
  --color-starlight-blue-900: #263032;
  --color-starlight-blue-950: #141c1e;
}

SCSS

$starlight-blue: #b5ced4;
$starlight-blue-rgb: 181, 206, 212;
$starlight-blue-light: mix(#fff, $starlight-blue, 20%);
$starlight-blue-dark: mix(#000, $starlight-blue, 20%);

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