#66AA99
#66AA99
Blues · #6a9 is the three-digit shorthand for #66AA99. In CSS the two notations mean the same color.
| HEX | #66AA99 |
|---|---|
| RGB | 102, 170, 153 |
| HSL | 165°, 29%, 53% |
| CMYK | 40%, 0%, 10%, 33% |
| Relative luminance | 0.34 |
Tap a code to copy it
Text contrast
Aa
On white
2.7:1 Below AA
Aa
On black
7.77:1 Passes AA
Colours that work with it
Complement
#AA6476
Analogous
#64AA76#6499AA
Triadic
#9964AA#AA9964
Shade scale
50100200300400500600700800
Seen with colour blindness
ProtanopiaDeuteranopiaTritanopia
How to read this
- A hex code writes red, green and blue as two hexadecimal digits each. #ff0000 is red at full strength and the others at zero.
- HSL states hue (0–360°), saturation and lightness. Nudging a colour brighter means changing one number, which is why it is easier to work with by hand.
- Text contrast follows WCAG. Body-size text needs 4.5:1 or better, and 21:1 between white and black is the maximum possible.
- The colour-blindness row computes how this colour appears under three types of colour vision deficiency — the reason never to encode information in colour alone.
Frequently asked questions
Q. Are #6a9 and #66AA99 the same color?
Yes. CSS doubles each digit of a three-digit hex, so #6a9 expands to #66AA99. Only 4,096 colors can be written in three digits, and this is one of them.
Q. What text color works on #66AA99?
Black text. Contrast against white is 2.7:1 and against black 7.77:1, so pick the larger one — WCAG asks for 4.5:1 at body size.
Q. Which named color is closest to #66AA99?
Cadet blue. It is not an exact match, so where color matters use the hex code itself rather than the name.