#C8102E
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
0.128
Hue H
350°
Saturation S
85%
Lightness L
42%
Value V
78%
Temperature
Warm
Brightness
Dark
Chroma
Vivid
Hue family
Red
Contrast on white: 5.88:1 (AA body Pass / AAA Fail)
Contrast on black: 3.57:1 (AA body Fail / AAA Fail)
Open full contrast tool →Color blindness simulator
Approximate appearance under common color-vision deficiencies (matrix simulation).
Normal vision
#c8102e
Protanopia
#787727
Deuteranopia
#839125
Tritanopia
#bf2120
Achromatopsia
#4a4a4a
Creative pairings
Hue-wheel harmonies and 10% shade/tint steps — not AI-generated copy.