Home·Colour name reference

#66DDEE

#66DDEE

Blues · #6de is the three-digit shorthand for #66DDEE. In CSS the two notations mean the same color.

HEX#66DDEE
RGB102, 221, 238
HSL188°, 80%, 67%
CMYK57%, 7%, 0%, 7%
Relative luminance0.61

Tap a code to copy it

Text contrast

Aa

On white

1.6:1 Below AA

Aa

On black

13.14:1 Passes AA

Colours that work with it

Complement

#EE7968

Analogous

#68EEBD#6899EE

Triadic

#EE68DC#DCEE68

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 #6de and #66DDEE the same color?

Yes. CSS doubles each digit of a three-digit hex, so #6de expands to #66DDEE. Only 4,096 colors can be written in three digits, and this is one of them.

Q. What text color works on #66DDEE?

Black text. Contrast against white is 1.6:1 and against black 13.14:1, so pick the larger one — WCAG asks for 4.5:1 at body size.

Q. Which named color is closest to #66DDEE?

Sky blue. It is not an exact match, so where color matters use the hex code itself rather than the name.

Closest named colors