#666F99
Muted Blue
HEX
RGB
HSL
About #666F99 Muted Blue
#666F99 is a muted blue color. In the RGB color model, it is composed of 102 red, 111 green, and 153 blue. In the HSL color space, it has a hue of 229°, saturation of 20%, and lightness of 50%.
This color has a medium lightness value, making it a balanced tone ideal for both text and UI elements. With low saturation, it appears muted and subtle.
CSS Code
Use #666F99 in your CSS, SCSS, or Tailwind projects.
Color Properties
229°
Hue
20%
Saturation
50%
Lightness
Muted Blue
Color Harmonies
Colors that work well with #666F99 based on color theory.
Accessibility
WCAG 2.1 contrast ratio of #666F99 against white and black backgrounds.
Aa#666F99 on White
Contrast Ratio4.89:1
AA ✓AA Large ✓AAA ✗
Aa#666F99 on Black
Contrast Ratio4.3:1
AA ✗AA Large ✓AAA ✗
Color Conversion Table
Complete conversion of #666F99 across different color formats.
| Format | Value |
|---|---|
| HEX | #666F99 |
| RGB | rgb(102, 111, 153) |
| HSL | hsl(229, 20%, 50%) |
| RGB Decimal | 102, 111, 153 |
| RGB Percent | 40.0%, 43.5%, 60.0% |
| CMYK (approx.) | 33%, 27%, 0%, 40% |
Related Palettes
12 palettes using #666F99 or similar colors