#406566
Approximate name: Dark 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
DarkSlateGray
Relative luminance
0.114
Hue H
182°
Saturation S
23%
Lightness L
33%
Value V
40%
Temperature
Cool
Brightness
Dark
Chroma
Muted
Hue family
Cyan
Contrast on white: 6.42:1 (AA body Pass / AAA Fail)
Contrast on black: 3.27:1 (AA body Fail / AAA Fail)
Open full contrast tool →Color blindness simulator
Approximate appearance under common color-vision deficiencies (matrix simulation).
Normal vision
#406566
Protanopia
#505066
Deuteranopia
#4e4b66
Tritanopia
#426666
Achromatopsia
#5a5a5a
Creative pairings
Hue-wheel harmonies and 10% shade/tint steps — not AI-generated copy.