#10231F
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
0.014
Hue H
167°
Saturation S
37%
Lightness L
10%
Value V
14%
Temperature
Cool
Brightness
Dark
Chroma
Muted
Hue family
Cyan
Contrast on white: 16.38:1 (AA body Pass / AAA Pass)
Contrast on black: 1.28:1 (AA body Fail / AAA Fail)
Open full contrast tool →Color blindness simulator
Approximate appearance under common color-vision deficiencies (matrix simulation).
Normal vision
#10231f
Protanopia
#181820
Deuteranopia
#171620
Tritanopia
#112121
Achromatopsia
#1d1d1d
Creative pairings
Hue-wheel harmonies and 10% shade/tint steps — not AI-generated copy.