#8B4B4B
Approximate name: Sienna
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
Sienna
Relative luminance
0.11
Hue H
0°
Saturation S
30%
Lightness L
42%
Value V
55%
Temperature
Warm
Brightness
Dark
Chroma
Muted
Hue family
Red
Contrast on white: 6.55:1 (AA body Pass / AAA Fail)
Contrast on black: 3.21:1 (AA body Fail / AAA Fail)
Open full contrast tool →Color blindness simulator
Approximate appearance under common color-vision deficiencies (matrix simulation).
Normal vision
#8b4b4b
Protanopia
#6f6f4b
Deuteranopia
#73784b
Tritanopia
#884b4b
Achromatopsia
#5e5e5e
Creative pairings
Hue-wheel harmonies and 10% shade/tint steps — not AI-generated copy.