#4E1683
Approximate name: Indigo
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
Indigo
Relative luminance
0.038
Hue H
271°
Saturation S
71%
Lightness L
30%
Value V
51%
Temperature
Cool
Brightness
Dark
Chroma
Vivid
Hue family
Purple
Contrast on white: 11.89:1 (AA body Pass / AAA Pass)
Contrast on black: 1.77:1 (AA body Fail / AAA Fail)
Open full contrast tool →Color blindness simulator
Approximate appearance under common color-vision deficiencies (matrix simulation).
Normal vision
#4e1683
Protanopia
#363569
Deuteranopia
#393d62
Tritanopia
#4b544f
Achromatopsia
#333333
Creative pairings
Hue-wheel harmonies and 10% shade/tint steps — not AI-generated copy.