Fade to Black

CSS

:root {
  --fade-to-black: #676965;
  --fade-to-black-rgb: 103 105 101;
  --fade-to-black-oklch: oklch(0.518 0.007 128.6);
}

.element {
  color: var(--fade-to-black);
  background-color: hsl(90 2% 40%);
  border-color: oklch(0.518 0.007 128.6);
}

Tailwind CSS v4

@theme {
  --color-fade-to-black: #676965;
  --color-fade-to-black-50: #f4f5f3;
  --color-fade-to-black-100: #e7e8e6;
  --color-fade-to-black-200: #d3d5d2;
  --color-fade-to-black-300: #b6b8b4;
  --color-fade-to-black-400: #9d9f9b;
  --color-fade-to-black-500: #858782;
  --color-fade-to-black-600: #70726e;
  --color-fade-to-black-700: #5a5b58;
  --color-fade-to-black-800: #424340;
  --color-fade-to-black-900: #2d2e2c;
  --color-fade-to-black-950: #1a1b19;
}

SCSS

$fade-to-black: #676965;
$fade-to-black-rgb: 103, 105, 101;
$fade-to-black-light: mix(#fff, $fade-to-black, 20%);
$fade-to-black-dark: mix(#000, $fade-to-black, 20%);

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