#3B66B5
Blue
HEX
RGB
HSL
About #3B66B5 Blue
#3B66B5 is a blue color. In the RGB color model, it is composed of 59 red, 102 green, and 181 blue. In the HSL color space, it has a hue of 219°, saturation of 51%, and lightness of 47%.
This color has a medium lightness value, making it a balanced tone ideal for both text and UI elements. With moderate saturation, it appears balanced and versatile.
CSS Code
Use #3B66B5 in your CSS, SCSS, or Tailwind projects.
Color Properties
219°
Hue
51%
Saturation
47%
Lightness
Blue
Color Harmonies
Colors that work well with #3B66B5 based on color theory.
Accessibility
WCAG 2.1 contrast ratio of #3B66B5 against white and black backgrounds.
Aa#3B66B5 on White
Contrast Ratio5.59:1
AA ✓AA Large ✓AAA ✗
Aa#3B66B5 on Black
Contrast Ratio3.75:1
AA ✗AA Large ✓AAA ✗
Color Conversion Table
Complete conversion of #3B66B5 across different color formats.
| Format | Value |
|---|---|
| HEX | #3B66B5 |
| RGB | rgb(59, 102, 181) |
| HSL | hsl(219, 51%, 47%) |
| RGB Decimal | 59, 102, 181 |
| RGB Percent | 23.1%, 40.0%, 71.0% |
| CMYK (approx.) | 67%, 44%, 0%, 29% |
Related Palettes
12 palettes using #3B66B5 or similar colors