#66A5E1
Blue
HEX
RGB
HSL
About #66A5E1 Blue
#66A5E1 is a blue color. In the RGB color model, it is composed of 102 red, 165 green, and 225 blue. In the HSL color space, it has a hue of 209°, saturation of 67%, and lightness of 64%.
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 #66A5E1 in your CSS, SCSS, or Tailwind projects.
Color Properties
209°
Hue
67%
Saturation
64%
Lightness
Blue
Color Harmonies
Colors that work well with #66A5E1 based on color theory.
Accessibility
WCAG 2.1 contrast ratio of #66A5E1 against white and black backgrounds.
Aa#66A5E1 on White
Contrast Ratio2.61:1
AA ✗AA Large ✗AAA ✗
Aa#66A5E1 on Black
Contrast Ratio8.03:1
AA ✓AA Large ✓AAA ✓
Color Conversion Table
Complete conversion of #66A5E1 across different color formats.
| Format | Value |
|---|---|
| HEX | #66A5E1 |
| RGB | rgb(102, 165, 225) |
| HSL | hsl(209, 67%, 64%) |
| RGB Decimal | 102, 165, 225 |
| RGB Percent | 40.0%, 64.7%, 88.2% |
| CMYK (approx.) | 55%, 27%, 0%, 12% |
Related Palettes
12 palettes using #66A5E1 or similar colors