#8B0000
Approximate name: Dark Red
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
DarkRed
Relative luminance
0.055
Hue H
0°
Saturation S
100%
Lightness L
27%
Value V
55%
Temperature
Warm
Brightness
Dark
Chroma
Vivid
Hue family
Red
Contrast on white: 10.01:1 (AA body Pass / AAA Pass)
Contrast on black: 2.10:1 (AA body Fail / AAA Fail)
Open full contrast tool →Color blindness simulator
Approximate appearance under common color-vision deficiencies (matrix simulation).
Normal vision
#8b0000
Protanopia
#4f4e00
Deuteranopia
#576100
Tritanopia
#840000
Achromatopsia
#2a2a2a
Creative pairings
Hue-wheel harmonies and 10% shade/tint steps — not AI-generated copy.