#F1F4FB

CSS

:root {
  --cotton-ball: #f1f4fb;
  --cotton-ball-rgb: 241 244 251;
  --cotton-ball-oklch: oklch(0.967 0.01 267.4);
}

.element {
  color: var(--cotton-ball);
  background-color: hsl(222 56% 96%);
  border-color: oklch(0.967 0.01 267.4);
}

Tailwind CSS v4

@theme {
  --color-cotton-ball: #f1f4fb;
  --color-cotton-ball-50: #f4f5f8;
  --color-cotton-ball-100: #e6e8eb;
  --color-cotton-ball-200: #d2d4d9;
  --color-cotton-ball-300: #b5b7bd;
  --color-cotton-ball-400: #9c9ea4;
  --color-cotton-ball-500: #83868d;
  --color-cotton-ball-600: #6f7177;
  --color-cotton-ball-700: #595b5f;
  --color-cotton-ball-800: #414246;
  --color-cotton-ball-900: #2d2e30;
  --color-cotton-ball-950: #1a1b1d;
}

SCSS

$cotton-ball: #f1f4fb;
$cotton-ball-rgb: 241, 244, 251;
$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);
}