#311B23
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
0.016
Hue H
338°
Saturation S
29%
Lightness L
15%
Value V
19%
Temperature
Warm
Brightness
Dark
Chroma
Muted
Hue family
Pink
Contrast on white: 16.01:1 (AA body Pass / AAA Pass)
Contrast on black: 1.31:1 (AA body Fail / AAA Fail)
Open full contrast tool →Color blindness simulator
Approximate appearance under common color-vision deficiencies (matrix simulation).
Normal vision
#311b23
Protanopia
#272721
Deuteranopia
#292a21
Tritanopia
#30201f
Achromatopsia
#222222
Creative pairings
Hue-wheel harmonies and 10% shade/tint steps — not AI-generated copy.