#181023
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
265°
Saturation S
37%
Lightness L
10%
Value V
14%
Temperature
Cool
Brightness
Dark
Chroma
Muted
Hue family
Purple
Contrast on white: 18.47:1 (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
#181023
Protanopia
#15141e
Deuteranopia
#15161d
Tritanopia
#181b1a
Achromatopsia
#151515
Creative pairings
Hue-wheel harmonies and 10% shade/tint steps — not AI-generated copy.