Brush Blue

CSS

:root {
  --brush-blue: #d4e1ed;
  --brush-blue-rgb: 212 225 237;
  --brush-blue-oklch: oklch(0.904 0.022 245.9);
}

.element {
  color: var(--brush-blue);
  background-color: hsl(209 41% 88%);
  border-color: oklch(0.904 0.022 245.9);
}

Tailwind CSS v4

@theme {
  --color-brush-blue: #d4e1ed;
  --color-brush-blue-50: #f0f6fb;
  --color-brush-blue-100: #e2e9ef;
  --color-brush-blue-200: #cdd5dd;
  --color-brush-blue-300: #afb9c2;
  --color-brush-blue-400: #94a0ab;
  --color-brush-blue-500: #7b8894;
  --color-brush-blue-600: #68737d;
  --color-brush-blue-700: #535c64;
  --color-brush-blue-800: #3c4349;
  --color-brush-blue-900: #292f33;
  --color-brush-blue-950: #171b1f;
}

SCSS

$brush-blue: #d4e1ed;
$brush-blue-rgb: 212, 225, 237;
$brush-blue-light: mix(#fff, $brush-blue, 20%);
$brush-blue-dark: mix(#000, $brush-blue, 20%);

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