#31385E
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
231°
Saturation S
31%
Lightness L
28%
Value V
37%
Temperature
Cool
Brightness
Dark
Chroma
Muted
Hue family
Blue
Contrast on white: 11.30:1 (AA body Pass / AAA Pass)
Contrast on black: 1.86:1 (AA body Fail / AAA Fail)
Open full contrast tool →Color blindness simulator
Approximate appearance under common color-vision deficiencies (matrix simulation).
Normal vision
#31385e
Protanopia
#343455
Deuteranopia
#343353
Tritanopia
#314e4c
Achromatopsia
#3a3a3a
Creative pairings
Hue-wheel harmonies and 10% shade/tint steps — not AI-generated copy.