Information about #666D6B color

#666D6B color image

Basic facts about this digital color

#666D6B falls into the Spring Green Color Family — Desaturated, Light brightness. The mix behind it: rgb(102, 109, 107) — 40% red, 42.7% green, 42% blue; the print equivalent is CMYK 3 / 0 / 1 / 57. New to color codes? See our guide to RGB color codes.

#666D6B presents itself as a muted, almost neutral grey — one that carries an easy, daylight feel. In practice it works well for balanced palettes where no single element should shout. In The Official Register of Color Names it is a hair away from Mid Grey (#666A6D). Slightly further away sit Nevada (#666F6F) and Dim Gray (#696969).

In RGB terms — rgb(102, 109, 107) — the green channel does the heavy lifting here. On this background, white text reaches a 5.3:1 contrast ratio (passing WCAG AA); black stays at 4.0:1. #666D6B has no official name yet. If this shade means something to you, you can be the one to name it.

#666D6B color variations

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

#666D6B 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 #666D6B

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

Mid Grey color link
Mid Grey

#666A6D

Nevada color link
Nevada

#666F6F

Dim Gray color link
Dim Gray

#696969

Pale Sky color link
Pale Sky

#636D70

Quarter Tuna color link
Quarter Tuna

#656A70

Scarpa Flow color link
Scarpa Flow

#6B6A6C

Traffic color link
Traffic

#6C6D68

Corduroy color link
Corduroy

#606E68

Granite Gray color link
Granite Gray

#676767

Shuttle Grey color link
Shuttle Grey

#61666B

Cloudy Gray color link
Cloudy Gray

#6D6968

Conversions between color systems and etc.

  • HEX#666D6B
  • RGB102, 109, 107
  • CMYK3, 0, 1, 57
  • CSSrgb(102, 109, 107)
  • HSL163°, 3%, 41%
  • HSL Precise162.857°, 3.318%, 41.373%
  • HSV163°, 6%, 43%
  • HSB163°, 6%, 43%
  • Normalized R (0.0–1.0)0.400
  • Normalized G (0.0–1.0)0.427
  • Normalized B (0.0–1.0)0.420
  • GLSLvec3(0.400, 0.427, 0.420)
  • GLSL with alphavec4(0.400, 0.427, 0.420, 1.000)
  • HLSL / Metalfloat3(0.400, 0.427, 0.420)
  • Percentage of Red in RGB40%
  • Percentage of Green in RGB42.7%
  • Percentage of Blue in RGB42%
  • Color FamilySpring Green
  • Saturation FamilyDesaturated
  • Lightness FamilyLight
  • HEX ID666D6B
  • DECIMAL ID6712683
  • Name LengthThis color has no name
  • Seen by search & AI crawlers7 times
  • Counting from2025-01-01