Blue Fog

CSS

:root {
  --blue-fog: #9babbb;
  --blue-fog-rgb: 155 171 187;
  --blue-fog-oklch: oklch(0.734 0.029 248.2);
}

.element {
  color: var(--blue-fog);
  background-color: hsl(210 19% 67%);
  border-color: oklch(0.734 0.029 248.2);
}

Tailwind CSS v4

@theme {
  --color-blue-fog: #9babbb;
  --color-blue-fog-50: #eff6fd;
  --color-blue-fog-100: #e1e9f2;
  --color-blue-fog-200: #cbd5e1;
  --color-blue-fog-300: #adb9c6;
  --color-blue-fog-400: #91a0af;
  --color-blue-fog-500: #778899;
  --color-blue-fog-600: #657381;
  --color-blue-fog-700: #515c68;
  --color-blue-fog-800: #3a444c;
  --color-blue-fog-900: #282f35;
  --color-blue-fog-950: #161b20;
}

SCSS

$blue-fog: #9babbb;
$blue-fog-rgb: 155, 171, 187;
$blue-fog-light: mix(#fff, $blue-fog, 20%);
$blue-fog-dark: mix(#000, $blue-fog, 20%);

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