#F6F9FD

CSS

:root {
  --cotton-ball: #f6f9fd;
  --cotton-ball-rgb: 246 249 253;
  --cotton-ball-oklch: oklch(0.981 0.006 255.5);
}

.element {
  color: var(--cotton-ball);
  background-color: hsl(214 64% 98%);
  border-color: oklch(0.981 0.006 255.5);
}

Tailwind CSS v4

@theme {
  --color-cotton-ball: #f6f9fd;
  --color-cotton-ball-50: #f4f5f7;
  --color-cotton-ball-100: #e6e8ea;
  --color-cotton-ball-200: #d2d4d7;
  --color-cotton-ball-300: #b5b7bb;
  --color-cotton-ball-400: #9c9fa2;
  --color-cotton-ball-500: #83868a;
  --color-cotton-ball-600: #6f7275;
  --color-cotton-ball-700: #595b5e;
  --color-cotton-ball-800: #414244;
  --color-cotton-ball-900: #2d2e2f;
  --color-cotton-ball-950: #1a1b1c;
}

SCSS

$cotton-ball: #f6f9fd;
$cotton-ball-rgb: 246, 249, 253;
$cotton-ball-light: mix(#fff, $cotton-ball, 20%);
$cotton-ball-dark: mix(#000, $cotton-ball, 20%);

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