#3B4C5E
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
0.069
Hue H
211°
Saturation S
23%
Lightness L
30%
Value V
37%
Temperature
Cool
Brightness
Dark
Chroma
Muted
Hue family
Blue
Contrast on white: 8.82:1 (AA body Pass / AAA Pass)
Contrast on black: 2.38:1 (AA body Fail / AAA Fail)
Open full contrast tool →Color blindness simulator
Approximate appearance under common color-vision deficiencies (matrix simulation).
Normal vision
#3b4c5e
Protanopia
#42435a
Deuteranopia
#414059
Tritanopia
#3c5655
Achromatopsia
#494949
Creative pairings
Hue-wheel harmonies and 10% shade/tint steps — not AI-generated copy.