#040307
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
0.001
Hue H
255°
Saturation S
40%
Lightness L
2%
Value V
3%
Temperature
Cool
Brightness
Dark
Chroma
Muted
Hue family
Purple
Contrast on white: 20.56:1 (AA body Pass / AAA Pass)
Contrast on black: 1.02:1 (AA body Fail / AAA Fail)
Open full contrast tool →Color blindness simulator
Approximate appearance under common color-vision deficiencies (matrix simulation).
Normal vision
#040307
Protanopia
#040406
Deuteranopia
#040406
Tritanopia
#040505
Achromatopsia
#040404
Creative pairings
Hue-wheel harmonies and 10% shade/tint steps — not AI-generated copy.