#031F13
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
0.01
Hue H
154°
Saturation S
82%
Lightness L
7%
Value V
12%
Temperature
Cool
Brightness
Dark
Chroma
Vivid
Hue family
Green
Contrast on white: 17.37:1 (AA body Pass / AAA Pass)
Contrast on black: 1.21:1 (AA body Fail / AAA Fail)
Open full contrast tool →Color blindness simulator
Approximate appearance under common color-vision deficiencies (matrix simulation).
Normal vision
#031f13
Protanopia
#0f0f16
Deuteranopia
#0e0b17
Tritanopia
#041819
Achromatopsia
#151515
Creative pairings
Hue-wheel harmonies and 10% shade/tint steps — not AI-generated copy.