#181F81
Approximate name: Midnight Blue
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
MidnightBlue
Relative luminance
0.028
Hue H
236°
Saturation S
69%
Lightness L
30%
Value V
51%
Temperature
Cool
Brightness
Dark
Chroma
Vivid
Hue family
Blue
Contrast on white: 13.53:1 (AA body Pass / AAA Pass)
Contrast on black: 1.55:1 (AA body Fail / AAA Fail)
Open full contrast tool →Color blindness simulator
Approximate appearance under common color-vision deficiencies (matrix simulation).
Normal vision
#181f81
Protanopia
#1b1b69
Deuteranopia
#1b1a64
Tritanopia
#185752
Achromatopsia
#282828
Creative pairings
Hue-wheel harmonies and 10% shade/tint steps — not AI-generated copy.