A dark gray with a hint of red.

  • Commonly used for interactive elements like buttons and links, secondary interface elements, visual indicators and status markers, decorative accents and highlights, and background elements and containers
  • This is GitHub's primary brand colour.

Colour Values

HEX

#181717

RGB

24, 23, 23

HSL

0, 2, 9

OKLCH

oklch(20.58% 0.0016 17.29)

Contrast Analysis

Against White

17.89

Good

Against Black

1.17

Very poor

Matching Algorithm

Method

Using LAB colour space for perceptually accurate matching (CIE94 formula).

Distance

0.52

Excellent
Input Colour
Nearest Match
Distance: 0.52

Colour Combinations

Monochromatic

Complementary

Analogous

Triadic

Brand Palette

Primary brand color
neutral-900
Brand accent
zinc-800
Complementary accent
neutral-900
Text & UI elements
slate-800
Backgrounds & borders
slate-200