#308DCF
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
0.242
Hue H
205°
Saturation S
62%
Lightness L
50%
Value V
81%
Temperature
Cool
Brightness
Dark
Chroma
Vivid
Hue family
Blue
Contrast on white: 3.60:1 (AA body Fail / AAA Fail)
Contrast on black: 5.84:1 (AA body Pass / AAA Fail)
Open full contrast tool →Color blindness simulator
Approximate appearance under common color-vision deficiencies (matrix simulation).
Normal vision
#308dcf
Protanopia
#5859bf
Deuteranopia
#534cbb
Tritanopia
#35b2b0
Achromatopsia
#797979
Creative pairings
Hue-wheel harmonies and 10% shade/tint steps — not AI-generated copy.