#2F3E4D
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
0.046
Hue H
210°
Saturation S
24%
Lightness L
24%
Value V
30%
Temperature
Cool
Brightness
Dark
Chroma
Muted
Hue family
Blue
Contrast on white: 10.95:1 (AA body Pass / AAA Pass)
Contrast on black: 1.92:1 (AA body Fail / AAA Fail)
Open full contrast tool →Color blindness simulator
Approximate appearance under common color-vision deficiencies (matrix simulation).
Normal vision
#2f3e4d
Protanopia
#353649
Deuteranopia
#353449
Tritanopia
#304746
Achromatopsia
#3b3b3b
Creative pairings
Hue-wheel harmonies and 10% shade/tint steps — not AI-generated copy.