#403B25
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
0.044
Hue H
49°
Saturation S
27%
Lightness L
20%
Value V
25%
Temperature
Warm
Brightness
Dark
Chroma
Muted
Hue family
Yellow
Contrast on white: 11.23:1 (AA body Pass / AAA Pass)
Contrast on black: 1.87:1 (AA body Fail / AAA Fail)
Open full contrast tool →Color blindness simulator
Approximate appearance under common color-vision deficiencies (matrix simulation).
Normal vision
#403b25
Protanopia
#3e3e2a
Deuteranopia
#3e3f2c
Tritanopia
#402f2f
Achromatopsia
#3a3a3a
Creative pairings
Hue-wheel harmonies and 10% shade/tint steps — not AI-generated copy.