#2A1721
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
328°
Saturation S
29%
Lightness L
13%
Value V
16%
Temperature
Cool
Brightness
Dark
Chroma
Muted
Hue family
Pink
Contrast on white: 16.90:1 (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
#2a1721
Protanopia
#22221f
Deuteranopia
#23241e
Tritanopia
#291d1c
Achromatopsia
#1e1e1e
Creative pairings
Hue-wheel harmonies and 10% shade/tint steps — not AI-generated copy.