#21121E
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
0.008
Hue H
312°
Saturation S
29%
Lightness L
10%
Value V
13%
Temperature
Cool
Brightness
Dark
Chroma
Muted
Hue family
Pink
Contrast on white: 17.95:1 (AA body Pass / AAA Pass)
Contrast on black: 1.17:1 (AA body Fail / AAA Fail)
Open full contrast tool →Color blindness simulator
Approximate appearance under common color-vision deficiencies (matrix simulation).
Normal vision
#21121e
Protanopia
#1b1a1b
Deuteranopia
#1b1c1a
Tritanopia
#201918
Achromatopsia
#181818
Creative pairings
Hue-wheel harmonies and 10% shade/tint steps — not AI-generated copy.