#3F51D9
Blue
HEX
RGB
HSL
About #3F51D9 Blue
#3F51D9 is a blue color. In the RGB color model, it is composed of 63 red, 81 green, and 217 blue. In the HSL color space, it has a hue of 233°, saturation of 67%, and lightness of 55%.
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 #3F51D9 in your CSS, SCSS, or Tailwind projects.
Color Properties
233°
Hue
67%
Saturation
55%
Lightness
Blue
Color Harmonies
Colors that work well with #3F51D9 based on color theory.
Accessibility
WCAG 2.1 contrast ratio of #3F51D9 against white and black backgrounds.
Aa#3F51D9 on White
Contrast Ratio6.19:1
AA ✓AA Large ✓AAA ✗
Aa#3F51D9 on Black
Contrast Ratio3.39:1
AA ✗AA Large ✓AAA ✗
Color Conversion Table
Complete conversion of #3F51D9 across different color formats.
| Format | Value |
|---|---|
| HEX | #3F51D9 |
| RGB | rgb(63, 81, 217) |
| HSL | hsl(233, 67%, 55%) |
| RGB Decimal | 63, 81, 217 |
| RGB Percent | 24.7%, 31.8%, 85.1% |
| CMYK (approx.) | 71%, 63%, 0%, 15% |
Related Palettes
12 palettes using #3F51D9 or similar colors