#666B4E
Umber · medium warm green
About #666B4E
#666B4E is a muted, medium shade in the green family. On screen it is built from 40% red, 42% green and 31% blue; for print, its CMYK mix is 5% cyan, 0% magenta, 27% yellow and 58% black. Its overall feel is warm.
Of the common colour names it is somewhere between Umber and Eucalyptus (ΔE 16.9); Eucalyptus comes next. Its complementary colour, directly opposite on the colour wheel, is #534E6B — a eggplant tone that gives the strongest contrast in hue.
Designers tend to use medium tones like #666B4E for illustrations, icons and secondary elements. White text reads best on it at 5.56:1 (a WCAG AA pass). Used as a text colour on white, it is readable too (5.56:1).
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 #666B4E
WCAG contrast for white and black text on this colour.
Colour-blindness preview
How #666B4E 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 #666B4E?
#666B4E is a muted, medium shade in the green family. On screen it is built from 40% red, 42% green and 31% blue; for print, its CMYK mix is 5% cyan, 0% magenta, 27% yellow and 58% black. Its overall feel is warm.
›What text colour should I use on #666B4E?
Use white text. White on #666B4E has a contrast ratio of 5.56:1 (AA).
›What colours go with #666B4E?
Its complementary colour is #534E6B, and analogous partners are #6B624E and #586B4E.