Home·Colour name reference

White

#FFFFFF

HEX#FFFFFF
RGB255, 255, 255
HSL0°, 0%, 100%
CMYK0%, 0%, 0%, 0%
Relative luminance1

Text contrast

Aa

On white

1:1 Below AA

Aa

On black

21:1 Passes AA

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. What is the hex code for White?

#FFFFFF. That is 255, 255, 255 in RGB, and hue 0°, saturation 0%, lightness 100% in HSL.

Q. Should text on White be white or black?

Black. Contrast against white is 1:1 and against black 21:1, so take the higher one if body-size text has to be readable.

Q. Can I send these CMYK values straight to print?

The computed values are C 0% · M 0% · Y 0% · K 0%. Real printing depends on paper and ink, so check against the printer's swatch book when the colour matters.

Q. Is this colour distinguishable with colour blindness?

It appears as #FFFFFF with protanopia, #FFFFFF with deuteranopia and #FFFFFF with tritanopia. Where those values converge with another colour, add a shape or a label instead of relying on hue.

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