#E83B43
Approximate name: Crimson
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
Crimson
Relative luminance
0.207
Hue H
357°
Saturation S
79%
Lightness L
57%
Value V
91%
Temperature
Warm
Brightness
Dark
Chroma
Vivid
Hue family
Red
Contrast on white: 4.09:1 (AA body Fail / AAA Fail)
Contrast on black: 5.14:1 (AA body Pass / AAA Fail)
Open full contrast tool →Color blindness simulator
Approximate appearance under common color-vision deficiencies (matrix simulation).
Normal vision
#e83b43
Protanopia
#9d9c41
Deuteranopia
#a7b441
Tritanopia
#df403f
Achromatopsia
#707070
Creative pairings
Hue-wheel harmonies and 10% shade/tint steps — not AI-generated copy.