#A84D4D
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
0.142
Hue H
0°
Saturation S
37%
Lightness L
48%
Value V
66%
Temperature
Warm
Brightness
Dark
Chroma
Muted
Hue family
Red
Contrast on white: 5.48:1 (AA body Pass / AAA Fail)
Contrast on black: 3.83:1 (AA body Fail / AAA Fail)
Open full contrast tool →Color blindness simulator
Approximate appearance under common color-vision deficiencies (matrix simulation).
Normal vision
#a84d4d
Protanopia
#81804d
Deuteranopia
#868d4d
Tritanopia
#a34d4d
Achromatopsia
#686868
Creative pairings
Hue-wheel harmonies and 10% shade/tint steps — not AI-generated copy.