CSS Color: Black

Black is the complete absence of light in the RGB model, with all channels at zero. At hex `#000000`, it has 0% lightness with no hue or saturation.

In web design, Black is the default text color in most browsers and the most common choice for body text. It provides maximum readability on white backgrounds (21:1 contrast). Pure black is also used for dark mode backgrounds, though many designers prefer slightly lighter shades like `#0a0a0b` or `#1a1a1a` to reduce the harshness of pure black.

For accessibility, Black on White is the gold standard with 21:1 contrast. However, pure black backgrounds with pure white text can cause halation (bright text appearing to glow) for some users. This is why many dark mode designs use dark gray instead of pure black.

Black pairs with everything and is the foundation of most color schemes. In dark mode designs, consider using near-blacks (`#111111`, `#0a0a0b`) for backgrounds and reserving pure black for text and borders. In Tailwind CSS, `black` is a built-in color.