#646B59
Eucalyptus · medium cool gray
About #646B59
#646B59 is a muted, medium shade in the gray family. On screen it is built from 39% red, 42% green and 35% blue; for print, its CMYK mix is 7% cyan, 0% magenta, 17% yellow and 58% black. Its overall feel is cool.
Of the common colour names it is similar to Eucalyptus (ΔE 14.3); Umber comes next. Its complementary colour, directly opposite on the colour wheel, is #60596B — a eggplant tone that gives the strongest contrast in hue.
Designers tend to use medium tones like #646B59 for illustrations, icons and secondary elements. Put white text on top of it — 5.54:1, a WCAG AA pass. Used as a text colour on white, it is readable too (5.54:1).
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 #646B59
WCAG contrast for white and black text on this colour.
Colour-blindness preview
How #646B59 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 #646B59?
#646B59 is a muted, medium shade in the gray family. On screen it is built from 39% red, 42% green and 35% blue; for print, its CMYK mix is 7% cyan, 0% magenta, 17% yellow and 58% black. Its overall feel is cool.
›What text colour should I use on #646B59?
Use white text. White on #646B59 has a contrast ratio of 5.54:1 (AA).
›What colours go with #646B59?
Its complementary colour is #60596B, and analogous partners are #6B6959 and #5B6B59.