Sky Grey

CSS

:root {
  --sky-grey: #b6c3c1;
  --sky-grey-rgb: 182 195 193;
  --sky-grey-oklch: oklch(0.807 0.015 185.9);
}

.element {
  color: var(--sky-grey);
  background-color: hsl(171 10% 74%);
  border-color: oklch(0.807 0.015 185.9);
}

Tailwind CSS v4

@theme {
  --color-sky-grey: #b6c3c1;
  --color-sky-grey-50: #f1f6f6;
  --color-sky-grey-100: #e3e9e9;
  --color-sky-grey-200: #ced6d5;
  --color-sky-grey-300: #b0bab9;
  --color-sky-grey-400: #95a1a0;
  --color-sky-grey-500: #7c8987;
  --color-sky-grey-600: #697473;
  --color-sky-grey-700: #545d5c;
  --color-sky-grey-800: #3d4443;
  --color-sky-grey-900: #2a2f2e;
  --color-sky-grey-950: #181c1b;
}

SCSS

$sky-grey: #b6c3c1;
$sky-grey-rgb: 182, 195, 193;
$sky-grey-light: mix(#fff, $sky-grey, 20%);
$sky-grey-dark: mix(#000, $sky-grey, 20%);

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