Home·Colour name reference

#FFFF66

#FFFF66

Yellows · #ff6 is the three-digit shorthand for #FFFF66. In CSS the two notations mean the same color.

HEX#FFFF66
RGB255, 255, 102
HSL60°, 100%, 70%
CMYK0%, 0%, 60%, 0%
Relative luminance0.94

Tap a code to copy it

Text contrast

Aa

On white

1.06:1 Below AA

Aa

On black

19.75:1 Passes AA

Colours that work with it

Complement

#6666FF

Analogous

#FFB366#B3FF66

Triadic

#66FFFF#FF66FF

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 #ff6 and #FFFF66 the same color?

Yes. CSS doubles each digit of a three-digit hex, so #ff6 expands to #FFFF66. Only 4,096 colors can be written in three digits, and this is one of them.

Q. What text color works on #FFFF66?

Black text. Contrast against white is 1.06:1 and against black 19.75:1, so pick the larger one — WCAG asks for 4.5:1 at body size.

Q. Which named color is closest to #FFFF66?

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

Closest named colors