#4F7288
Approximate name: Slate Gray
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
SlateGray
Relative luminance
0.155
Hue H
203°
Saturation S
27%
Lightness L
42%
Value V
53%
Temperature
Cool
Brightness
Dark
Chroma
Muted
Hue family
Blue
Contrast on white: 5.13:1 (AA body Pass / AAA Fail)
Contrast on black: 4.09:1 (AA body Fail / AAA Fail)
Open full contrast tool →Color blindness simulator
Approximate appearance under common color-vision deficiencies (matrix simulation).
Normal vision
#4f7288
Protanopia
#5e5e83
Deuteranopia
#5c5a81
Tritanopia
#517e7e
Achromatopsia
#6a6a6a
Creative pairings
Hue-wheel harmonies and 10% shade/tint steps — not AI-generated copy.