#646E71
Gray · medium neutral
About #646E71
#646E71 is a near-neutral, medium shade in the gray family. On screen it is built from 39% red, 43% green and 44% blue; for print, its CMYK mix is 12% cyan, 3% magenta, 0% yellow and 56% black. It is close to neutral, so it sits comfortably next to both warm and cool colours.
Of the common colour names it is similar to Gray (ΔE 9.0); Slate Gray comes next. Its complementary colour, directly opposite on the colour wheel, is #716764 — a gray tone that gives the strongest contrast in hue.
Designers tend to use medium tones like #646E71 for illustrations, icons and secondary elements. Put white text on top of it — 5.24:1, a WCAG AA pass. Used as a text colour on white, it is readable too (5.24:1).
Colour codes
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Closest named colours
ΔE measures visible difference: under 2 is barely noticeable, over 10 is clearly different.
Text on #646E71
WCAG contrast for white and black text on this colour.
Colour-blindness preview
How #646E71 appears to people with the three most common types of colour-vision deficiency.
Shades, tints & matching colours
Similar colours
Frequently asked questions
›What colour is #646E71?
#646E71 is a near-neutral, medium shade in the gray family. On screen it is built from 39% red, 43% green and 44% blue; for print, its CMYK mix is 12% cyan, 3% magenta, 0% yellow and 56% black. It is close to neutral, so it sits comfortably next to both warm and cool colours.
›What text colour should I use on #646E71?
Use white text. White on #646E71 has a contrast ratio of 5.24:1 (AA).
›What colours go with #646E71?
Its complementary colour is #716764, and analogous partners are #64716D and #646871.