#428BFF
Vivid Blue
HEX
RGB
HSL
About #428BFF Vivid Blue
#428BFF is a vivid blue color. In the RGB color model, it is composed of 66 red, 139 green, and 255 blue. In the HSL color space, it has a hue of 217°, saturation of 100%, and lightness of 63%.
This color has a medium lightness value, making it a balanced tone ideal for both text and UI elements. With high saturation, it appears vibrant and eye-catching.
CSS Code
Use #428BFF in your CSS, SCSS, or Tailwind projects.
Color Properties
217°
Hue
100%
Saturation
63%
Lightness
Vivid Blue
Color Harmonies
Colors that work well with #428BFF based on color theory.
Accessibility
WCAG 2.1 contrast ratio of #428BFF against white and black backgrounds.
Aa#428BFF on White
Contrast Ratio3.3:1
AA ✗AA Large ✓AAA ✗
Aa#428BFF on Black
Contrast Ratio6.37:1
AA ✓AA Large ✓AAA ✗
Color Conversion Table
Complete conversion of #428BFF across different color formats.
| Format | Value |
|---|---|
| HEX | #428BFF |
| RGB | rgb(66, 139, 255) |
| HSL | hsl(217, 100%, 63%) |
| RGB Decimal | 66, 139, 255 |
| RGB Percent | 25.9%, 54.5%, 100.0% |
| CMYK (approx.) | 74%, 45%, 0%, 0% |
Related Palettes
12 palettes using #428BFF or similar colors