CSS named color
Black #000000
Black is a dark black. Below: every color format, WCAG contrast against black and white, its tints, shades and tones, and the harmonies that pair with it.
Color values
Contrast & accessibility
WCAG contrast ratio of Black used as a foreground on white and black backgrounds.
Aa The quick brown fox
21.00:1
On white
AA ✓ AAA ✓ AA Large ✓
Aa The quick brown fox
1.00:1
On black
AA ✕ AAA ✕ AA Large ✕
Tints, shades & tones
Systematic variations of Black — click any swatch to copy its hex.
Tintsmixed toward white
Shadesmixed toward black
Tonesmixed toward gray
Color harmonies
Palettes built from Black by rotating its hue. Each swatch links to its closest named color.
Complementary
Analogous
Split-complementary
Use Black in your stack
Tailwind (arbitrary value)
Works for any property: text-[#000000], border-[#000000].
CSS custom property
Reference it anywhere with var(--color).
Build a full theme
Turn Black into a complete shadcn/ui palette — light & dark, contrast-checked, one-command install.
Extract a theme →