Mild Blue

CSS

:root {
  --mild-blue: #cbd5db;
  --mild-blue-rgb: 203 213 219;
  --mild-blue-oklch: oklch(0.867 0.014 233.8);
}

.element {
  color: var(--mild-blue);
  background-color: hsl(202 18% 83%);
  border-color: oklch(0.867 0.014 233.8);
}

Tailwind CSS v4

@theme {
  --color-mild-blue: #cbd5db;
  --color-mild-blue-50: #f2f6f9;
  --color-mild-blue-100: #e4e9ec;
  --color-mild-blue-200: #cfd5d9;
  --color-mild-blue-300: #b1b9bd;
  --color-mild-blue-400: #97a0a5;
  --color-mild-blue-500: #7e888e;
  --color-mild-blue-600: #6a7378;
  --color-mild-blue-700: #555c60;
  --color-mild-blue-800: #3e4346;
  --color-mild-blue-900: #2b2e31;
  --color-mild-blue-950: #181b1d;
}

SCSS

$mild-blue: #cbd5db;
$mild-blue-rgb: 203, 213, 219;
$mild-blue-light: mix(#fff, $mild-blue, 20%);
$mild-blue-dark: mix(#000, $mild-blue, 20%);

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