A Month of Sundays

CSS

:root {
  --a-month-of-sundays: #b0b2bc;
  --a-month-of-sundays-rgb: 176 178 188;
  --a-month-of-sundays-oklch: oklch(0.765 0.014 277);
}

.element {
  color: var(--a-month-of-sundays);
  background-color: hsl(230 8% 71%);
  border-color: oklch(0.765 0.014 277);
}

Tailwind CSS v4

@theme {
  --color-a-month-of-sundays: #b0b2bc;
  --color-a-month-of-sundays-50: #f4f5f9;
  --color-a-month-of-sundays-100: #e7e7ed;
  --color-a-month-of-sundays-200: #d3d4da;
  --color-a-month-of-sundays-300: #b5b7bf;
  --color-a-month-of-sundays-400: #9c9ea7;
  --color-a-month-of-sundays-500: #838590;
  --color-a-month-of-sundays-600: #6f717a;
  --color-a-month-of-sundays-700: #595a61;
  --color-a-month-of-sundays-800: #414247;
  --color-a-month-of-sundays-900: #2d2e31;
  --color-a-month-of-sundays-950: #1a1a1d;
}

SCSS

$a-month-of-sundays: #b0b2bc;
$a-month-of-sundays-rgb: 176, 178, 188;
$a-month-of-sundays-light: mix(#fff, $a-month-of-sundays, 20%);
$a-month-of-sundays-dark: mix(#000, $a-month-of-sundays, 20%);

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