#263E45
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
194°
Saturation S
29%
Lightness L
21%
Value V
27%
Temperature
Cool
Brightness
Dark
Chroma
Muted
Hue family
Cyan
Contrast on white: 11.31:1 (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
#263e45
Protanopia
#303143
Deuteranopia
#2f2d43
Tritanopia
#274242
Achromatopsia
#383838
Creative pairings
Hue-wheel harmonies and 10% shade/tint steps — not AI-generated copy.