#256DA7
Approximate name: Steel 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
SteelBlue
Relative luminance
0.141
Hue H
207°
Saturation S
64%
Lightness L
40%
Value V
65%
Temperature
Cool
Brightness
Dark
Chroma
Vivid
Hue family
Blue
Contrast on white: 5.49:1 (AA body Pass / AAA Fail)
Contrast on black: 3.82:1 (AA body Fail / AAA Fail)
Open full contrast tool →Color blindness simulator
Approximate appearance under common color-vision deficiencies (matrix simulation).
Normal vision
#256da7
Protanopia
#444599
Deuteranopia
#403b96
Tritanopia
#298e8b
Achromatopsia
#5e5e5e
Creative pairings
Hue-wheel harmonies and 10% shade/tint steps — not AI-generated copy.