#B40E29
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
0.102
Hue H
350°
Saturation S
86%
Lightness L
38%
Value V
71%
Temperature
Warm
Brightness
Dark
Chroma
Vivid
Hue family
Red
Contrast on white: 6.92:1 (AA body Pass / AAA Fail)
Contrast on black: 3.04:1 (AA body Fail / AAA Fail)
Open full contrast tool →Color blindness simulator
Approximate appearance under common color-vision deficiencies (matrix simulation).
Normal vision
#b40e29
Protanopia
#6c6b22
Deuteranopia
#768221
Tritanopia
#ac1d1c
Achromatopsia
#434343
Creative pairings
Hue-wheel harmonies and 10% shade/tint steps — not AI-generated copy.