#B22222
Approximate name: Fire Brick
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
FireBrick
Relative luminance
0.107
Hue H
0°
Saturation S
68%
Lightness L
42%
Value V
70%
Temperature
Warm
Brightness
Dark
Chroma
Vivid
Hue family
Red
Contrast on white: 6.68:1 (AA body Pass / AAA Fail)
Contrast on black: 3.14:1 (AA body Fail / AAA Fail)
Open full contrast tool →Color blindness simulator
Approximate appearance under common color-vision deficiencies (matrix simulation).
Normal vision
#b22222
Protanopia
#747222
Deuteranopia
#7c8722
Tritanopia
#ab2222
Achromatopsia
#4d4d4d
Creative pairings
Hue-wheel harmonies and 10% shade/tint steps — not AI-generated copy.