A dark azure with subtle tones.

  • Commonly used for Backgrounds, Text, and Subtle borders
  • Used on the GitHub website (Primary page background, very dark navy/black).

Colour Values

HEX

#0d1117

RGB

13, 17, 23

HSL

216, 28, 7

OKLCH

oklch(17.63% 0.0140 258.36)

Contrast Analysis

Against White

18.92

Good

Against Black

1.11

Very poor

Matching Algorithm

Method

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

Distance

3.22

Excellent
Input Colour
Nearest Match
Distance: 3.22

Colour Combinations

Monochromatic

Complementary

Analogous

Triadic

Brand Palette

Primary brand color
gray-950
Brand accent
slate-800
Complementary accent
stone-900
Text & UI elements
slate-800
Backgrounds & borders
slate-200