#F20D0D
Approximate name: 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
Red
Relative luminance
0.192
Hue H
0°
Saturation S
90%
Lightness L
50%
Value V
95%
Temperature
Warm
Brightness
Dark
Chroma
Vivid
Hue family
Red
Contrast on white: 4.34:1 (AA body Fail / AAA Fail)
Contrast on black: 4.84:1 (AA body Pass / AAA Fail)
Open full contrast tool →Color blindness simulator
Approximate appearance under common color-vision deficiencies (matrix simulation).
Normal vision
#f20d0d
Protanopia
#8f8d0d
Deuteranopia
#9cad0d
Tritanopia
#e70d0d
Achromatopsia
#515151
Creative pairings
Hue-wheel harmonies and 10% shade/tint steps — not AI-generated copy.