#181E1E
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
0.012
Hue H
180°
Saturation S
11%
Lightness L
11%
Value V
12%
Temperature
Cool
Brightness
Dark
Chroma
Muted
Hue family
Cyan
Contrast on white: 16.89:1 (AA body Pass / AAA Pass)
Contrast on black: 1.24:1 (AA body Fail / AAA Fail)
Open full contrast tool →Color blindness simulator
Approximate appearance under common color-vision deficiencies (matrix simulation).
Normal vision
#181e1e
Protanopia
#1b1b1e
Deuteranopia
#1a1a1e
Tritanopia
#181e1e
Achromatopsia
#1c1c1c
Creative pairings
Hue-wheel harmonies and 10% shade/tint steps — not AI-generated copy.