#3666CE
Blue
HEX
RGB
HSL
About #3666CE Blue
#3666CE is a blue color. In the RGB color model, it is composed of 54 red, 102 green, and 206 blue. In the HSL color space, it has a hue of 221°, saturation of 61%, and lightness of 51%.
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 #3666CE in your CSS, SCSS, or Tailwind projects.
Color Properties
221°
Hue
61%
Saturation
51%
Lightness
Blue
Color Harmonies
Colors that work well with #3666CE based on color theory.
Accessibility
WCAG 2.1 contrast ratio of #3666CE against white and black backgrounds.
Aa#3666CE on White
Contrast Ratio5.32:1
AA ✓AA Large ✓AAA ✗
Aa#3666CE on Black
Contrast Ratio3.95:1
AA ✗AA Large ✓AAA ✗
Color Conversion Table
Complete conversion of #3666CE across different color formats.
| Format | Value |
|---|---|
| HEX | #3666CE |
| RGB | rgb(54, 102, 206) |
| HSL | hsl(221, 61%, 51%) |
| RGB Decimal | 54, 102, 206 |
| RGB Percent | 21.2%, 40.0%, 80.8% |
| CMYK (approx.) | 74%, 50%, 0%, 19% |
Related Palettes
12 palettes using #3666CE or similar colors