#031B05
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
0.008
Hue H
125°
Saturation S
80%
Lightness L
6%
Value V
11%
Temperature
Cool
Brightness
Dark
Chroma
Vivid
Hue family
Green
Contrast on white: 18.06:1 (AA body Pass / AAA Pass)
Contrast on black: 1.16:1 (AA body Fail / AAA Fail)
Open full contrast tool →Color blindness simulator
Approximate appearance under common color-vision deficiencies (matrix simulation).
Normal vision
#031b05
Protanopia
#0d0e0a
Deuteranopia
#0c0a0c
Tritanopia
#040f0f
Achromatopsia
#111111
Creative pairings
Hue-wheel harmonies and 10% shade/tint steps — not AI-generated copy.