Winter Day

CSS

:root {
  --winter-day: #e3e7e9;
  --winter-day-rgb: 227 231 233;
  --winter-day-oklch: oklch(0.925 0.005 228.8);
}

.element {
  color: var(--winter-day);
  background-color: hsl(200 12% 90%);
  border-color: oklch(0.925 0.005 228.8);
}

Tailwind CSS v4

@theme {
  --color-winter-day: #e3e7e9;
  --color-winter-day-50: #f4f5f6;
  --color-winter-day-100: #e6e8e9;
  --color-winter-day-200: #d2d5d6;
  --color-winter-day-300: #b5b8b9;
  --color-winter-day-400: #9b9fa1;
  --color-winter-day-500: #838789;
  --color-winter-day-600: #6f7274;
  --color-winter-day-700: #595b5d;
  --color-winter-day-800: #414344;
  --color-winter-day-900: #2c2e2f;
  --color-winter-day-950: #1a1b1b;
}

SCSS

$winter-day: #e3e7e9;
$winter-day-rgb: 227, 231, 233;
$winter-day-light: mix(#fff, $winter-day, 20%);
$winter-day-dark: mix(#000, $winter-day, 20%);

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