Information about #666C47 color

#666C47 color image

Basic facts about this digital color

In the Register's classification, #666C47 belongs to the Yellow Color Family, featuring Low Saturation and Neutral brightness. The mix behind it: rgb(102, 108, 71) — 40% red, 42.4% green, 27.8% blue; the print equivalent is CMYK 2 / 0 / 15 / 58. Curious how these numbers work? Read our RGB color codes guide.

#666C47 is a gently muted yellow that sits comfortably between light and dark. It is a natural fit for understated, calm designs that favor harmony over drama. In The Official Register of Color Names it is a hair away from Hemlock (#69684B). Nearby in the Register you will also find Woodland (#626746) and Siam (#686B50).

In RGB terms — rgb(102, 108, 71) — the green channel does the heavy lifting here. If you plan to put text on a #666C47 background, choose white — the contrast ratio is 5.5:1 (passing WCAG AA), while black manages only 3.8:1. Out of 16,777,216 possible colors, #666C47 is still unnamed — it can be claimed and named in The Official Register of Color Names.

#666C47 color variations

View this color variations of tints, shades, tones and hues.

#666C47 color harmonies

Color harmonies are pleasing color schemes created according to their position on a color wheel.

Complementary

Complementary color schemes are made by picking two opposite colors con the color wheel. They appear vibrant near to each other.

Complementary color schemes

Split complementary

Split complementary schemes are like complementary but they uses two adiacent colors of the complement. They are more flexible than complementary ones.

Split complementary color scheme

Analogous

Analogous color schemes are made by picking three colors that are next to each other on the color wheel. They are perceived as calm and serene.

Analogous color scheme

Triadic

Triadic color schemes are created by picking three colors equally spaced on the color wheel. They appear quite contrasted and multicolored.

Triadic color scheme

Tetradic

Tetradic color schemes are made form two couples of complementary colors in a rectangular shape on the color wheel.

Tetradic color scheme

Square

Square color schemes are like tetradic arranged in a square instead of rectangle. Colors appear even more contrasting.

Square color scheme

Nearest named colors to #666C47

The closest officially registered color names in the Register, ordered by similarity — your shade’s neighborhood is already being claimed.

Hemlock color link
Hemlock

#69684B

Woodland color link
Woodland

#626746

Siam color link
Siam

#686B50

Soya Bean color link
Soya Bean

#6F634B

Chalet Green color link
Chalet Green

#5A6E41

Barmy Army color link
Barmy Army

#607640

Crocodile color link
Crocodile

#706950

Old Bamboo color link
Old Bamboo

#5E644F

Dragon color link
Dragon

#665E4C

Kiki Khaki color link
Kiki Khaki

#70743E

Paddock color link
Paddock

#667156

Conversions between color systems and etc.

  • HEX#666C47
  • RGB102, 108, 71
  • CMYK2, 0, 15, 58
  • CSSrgb(102, 108, 71)
  • HSL70°, 21%, 35%
  • HSL Precise69.73°, 20.67%, 35.098%
  • HSV70°, 34%, 42%
  • HSB70°, 34%, 42%
  • Normalized R (0.0–1.0)0.400
  • Normalized G (0.0–1.0)0.424
  • Normalized B (0.0–1.0)0.278
  • GLSLvec3(0.400, 0.424, 0.278)
  • GLSL with alphavec4(0.400, 0.424, 0.278, 1.000)
  • HLSL / Metalfloat3(0.400, 0.424, 0.278)
  • Percentage of Red in RGB40%
  • Percentage of Green in RGB42.4%
  • Percentage of Blue in RGB27.8%
  • Color FamilyYellow
  • Saturation FamilyLow Saturation
  • Lightness FamilyNeutral
  • HEX ID666C47
  • DECIMAL ID6712391
  • Name LengthThis color has no name
  • Seen by search & AI crawlers8 times
  • Counting from2025-01-01