#031717
Approximate name: Black
Technical formats
Color-space values for scientific work and cross-device comparison.
Practical formats
Ready to paste into CSS, Tailwind, iOS, Android, Flutter, and more.
Color analysis
Objective metrics: luminance, hue, saturation, temperature, and contrast.
Nearest name
Black
Relative luminance
0.007
Hue H
180°
Saturation S
77%
Lightness L
5%
Value V
9%
Temperature
Cool
Brightness
Dark
Chroma
Vivid
Hue family
Cyan
Contrast on white: 18.44:1 (AA body Pass / AAA Pass)
Contrast on black: 1.14:1 (AA body Fail / AAA Fail)
Open full contrast tool →Color blindness simulator
Approximate appearance under common color-vision deficiencies (matrix simulation).
Normal vision
#031717
Protanopia
#0c0c17
Deuteranopia
#0b0917
Tritanopia
#041717
Achromatopsia
#111111
Creative pairings
Hue-wheel harmonies and 10% shade/tint steps — not AI-generated copy.