#3D1D7C
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
0.033
Hue H
260°
Saturation S
62%
Lightness L
30%
Value V
49%
Temperature
Cool
Brightness
Dark
Chroma
Vivid
Hue family
Purple
Contrast on white: 12.61:1 (AA body Pass / AAA Pass)
Contrast on black: 1.67:1 (AA body Fail / AAA Fail)
Open full contrast tool →Color blindness simulator
Approximate appearance under common color-vision deficiencies (matrix simulation).
Normal vision
#3d1d7c
Protanopia
#2f2f65
Deuteranopia
#313360
Tritanopia
#3b534f
Achromatopsia
#313131
Creative pairings
Hue-wheel harmonies and 10% shade/tint steps — not AI-generated copy.