#3D393D
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
0.043
Hue H
300°
Saturation S
3%
Lightness L
23%
Value V
24%
Temperature
Neutral
Brightness
Dark
Chroma
Near gray
Hue family
Gray
Contrast on white: 11.34:1 (AA body Pass / AAA Pass)
Contrast on black: 1.85:1 (AA body Fail / AAA Fail)
Open full contrast tool →Color blindness simulator
Approximate appearance under common color-vision deficiencies (matrix simulation).
Normal vision
#3d393d
Protanopia
#3b3b3c
Deuteranopia
#3c3c3c
Tritanopia
#3d3b3b
Achromatopsia
#3b3b3b
Creative pairings
Hue-wheel harmonies and 10% shade/tint steps — not AI-generated copy.