#E01F2C
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
0.17
Hue H
356°
Saturation S
76%
Lightness L
50%
Value V
88%
Temperature
Warm
Brightness
Dark
Chroma
Vivid
Hue family
Red
Contrast on white: 4.77:1 (AA body Pass / AAA Fail)
Contrast on black: 4.40:1 (AA body Fail / AAA Fail)
Open full contrast tool →Color blindness simulator
Approximate appearance under common color-vision deficiencies (matrix simulation).
Normal vision
#e01f2c
Protanopia
#8c8b29
Deuteranopia
#98a628
Tritanopia
#d62626
Achromatopsia
#5a5a5a
Creative pairings
Hue-wheel harmonies and 10% shade/tint steps — not AI-generated copy.