#1F3D4D
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
0.042
Hue H
201°
Saturation S
43%
Lightness L
21%
Value V
30%
Temperature
Cool
Brightness
Dark
Chroma
Muted
Hue family
Blue
Contrast on white: 11.46:1 (AA body Pass / AAA Pass)
Contrast on black: 1.83:1 (AA body Fail / AAA Fail)
Open full contrast tool →Color blindness simulator
Approximate appearance under common color-vision deficiencies (matrix simulation).
Normal vision
#1f3d4d
Protanopia
#2c2c49
Deuteranopia
#2a2848
Tritanopia
#214645
Achromatopsia
#363636
Creative pairings
Hue-wheel harmonies and 10% shade/tint steps — not AI-generated copy.