#1C1717
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
0.009
Hue H
0°
Saturation S
10%
Lightness L
10%
Value V
11%
Temperature
Warm
Brightness
Dark
Chroma
Muted
Hue family
Red
Contrast on white: 17.73:1 (AA body Pass / AAA Pass)
Contrast on black: 1.18:1 (AA body Fail / AAA Fail)
Open full contrast tool →Color blindness simulator
Approximate appearance under common color-vision deficiencies (matrix simulation).
Normal vision
#1c1717
Protanopia
#1a1a17
Deuteranopia
#1a1a17
Tritanopia
#1c1717
Achromatopsia
#181818
Creative pairings
Hue-wheel harmonies and 10% shade/tint steps — not AI-generated copy.