#425757
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
0.087
Hue H
180°
Saturation S
14%
Lightness L
30%
Value V
34%
Temperature
Cool
Brightness
Dark
Chroma
Muted
Hue family
Cyan
Contrast on white: 7.69:1 (AA body Pass / AAA Pass)
Contrast on black: 2.73:1 (AA body Fail / AAA Fail)
Open full contrast tool →Color blindness simulator
Approximate appearance under common color-vision deficiencies (matrix simulation).
Normal vision
#425757
Protanopia
#4b4b57
Deuteranopia
#4a4857
Tritanopia
#435757
Achromatopsia
#515151
Creative pairings
Hue-wheel harmonies and 10% shade/tint steps — not AI-generated copy.