Bit of Blue

CSS

:root {
  --bit-of-blue: #d9e3e5;
  --bit-of-blue-rgb: 217 227 229;
  --bit-of-blue-oklch: oklch(0.909 0.011 211);
}

.element {
  color: var(--bit-of-blue);
  background-color: hsl(190 19% 87%);
  border-color: oklch(0.909 0.011 211);
}

Tailwind CSS v4

@theme {
  --color-bit-of-blue: #d9e3e5;
  --color-bit-of-blue-50: #f2f6f7;
  --color-bit-of-blue-100: #e4e9ea;
  --color-bit-of-blue-200: #cfd5d7;
  --color-bit-of-blue-300: #b1b9bb;
  --color-bit-of-blue-400: #97a0a2;
  --color-bit-of-blue-500: #7e888a;
  --color-bit-of-blue-600: #6b7375;
  --color-bit-of-blue-700: #555c5e;
  --color-bit-of-blue-800: #3e4344;
  --color-bit-of-blue-900: #2b2f2f;
  --color-bit-of-blue-950: #181b1c;
}

SCSS

$bit-of-blue: #d9e3e5;
$bit-of-blue-rgb: 217, 227, 229;
$bit-of-blue-light: mix(#fff, $bit-of-blue, 20%);
$bit-of-blue-dark: mix(#000, $bit-of-blue, 20%);

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