#3F4D3E
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
0.067
Hue H
116°
Saturation S
11%
Lightness L
27%
Value V
30%
Temperature
Cool
Brightness
Dark
Chroma
Muted
Hue family
Green
Contrast on white: 8.96:1 (AA body Pass / AAA Pass)
Contrast on black: 2.34:1 (AA body Fail / AAA Fail)
Open full contrast tool →Color blindness simulator
Approximate appearance under common color-vision deficiencies (matrix simulation).
Normal vision
#3f4d3e
Protanopia
#454542
Deuteranopia
#444343
Tritanopia
#404445
Achromatopsia
#474747
Creative pairings
Hue-wheel harmonies and 10% shade/tint steps — not AI-generated copy.