Black Grey

CSS

:root {
  --black-grey: #24272e;
  --black-grey-rgb: 36 39 46;
  --black-grey-oklch: oklch(0.273 0.014 267.1);
}

.element {
  color: var(--black-grey);
  background-color: hsl(222 12% 16%);
  border-color: oklch(0.273 0.014 267.1);
}

Tailwind CSS v4

@theme {
  --color-black-grey: #24272e;
  --color-black-grey-50: #f3f5f9;
  --color-black-grey-100: #e6e8ed;
  --color-black-grey-200: #d2d4da;
  --color-black-grey-300: #b4b7bf;
  --color-black-grey-400: #9b9ea7;
  --color-black-grey-500: #828690;
  --color-black-grey-600: #6e7179;
  --color-black-grey-700: #585b61;
  --color-black-grey-800: #404247;
  --color-black-grey-900: #2c2e31;
  --color-black-grey-950: #191b1d;
}

SCSS

$black-grey: #24272e;
$black-grey-rgb: 36, 39, 46;
$black-grey-light: mix(#fff, $black-grey, 20%);
$black-grey-dark: mix(#000, $black-grey, 20%);

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