#66B1D1
Blue
HEX
RGB
HSL
About #66B1D1 Blue
#66B1D1 is a blue color. In the RGB color model, it is composed of 102 red, 177 green, and 209 blue. In the HSL color space, it has a hue of 198°, saturation of 54%, and lightness of 61%.
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 #66B1D1 in your CSS, SCSS, or Tailwind projects.
Color Properties
198°
Hue
54%
Saturation
61%
Lightness
Blue
Color Harmonies
Colors that work well with #66B1D1 based on color theory.
Accessibility
WCAG 2.1 contrast ratio of #66B1D1 against white and black backgrounds.
Aa#66B1D1 on White
Contrast Ratio2.39:1
AA ✗AA Large ✗AAA ✗
Aa#66B1D1 on Black
Contrast Ratio8.77:1
AA ✓AA Large ✓AAA ✓
Color Conversion Table
Complete conversion of #66B1D1 across different color formats.
| Format | Value |
|---|---|
| HEX | #66B1D1 |
| RGB | rgb(102, 177, 209) |
| HSL | hsl(198, 54%, 61%) |
| RGB Decimal | 102, 177, 209 |
| RGB Percent | 40.0%, 69.4%, 82.0% |
| CMYK (approx.) | 51%, 15%, 0%, 18% |
Related Palettes
12 palettes using #66B1D1 or similar colors